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Beer is one of the oldest and the most widely consumed type of
alcoholic drink An alcoholic beverage (also called an alcoholic drink, adult beverage, or a drink) is a drink that contains ethanol, a type of alcohol that acts as a drug and is produced by fermentation of grains, fruits, or other sources of sugar. The c ...
in the world, and the third most popular drink overall after
water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ...
and
tea Tea is an aromatic beverage prepared by pouring hot or boiling water over cured or fresh leaves of '' Camellia sinensis'', an evergreen shrub native to East Asia which probably originated in the borderlands of southwestern China and northe ...
. It is produced by the
brewing Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and #Fermenting, fermenting the resulting sweet liquid with Yeast#Beer, yeast. It may be done in a brewery ...
and
fermentation Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen. In food ...
of
starch Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diets ...
es, mainly derived from
cereal A cereal is any Poaceae, grass cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, Cereal germ, germ, and bran. Cereal Grain, grain crops are grown in greater quantit ...
grains—most commonly from
malt Malt is germinated cereal grain that has been dried in a process known as " malting". The grain is made to germinate by soaking in water and is then halted from germinating further by drying with hot air. Malted grain is used to make beer, wh ...
ed
barley Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley pr ...
, though
wheat Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeologi ...
,
maize Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. Th ...
(corn),
rice Rice is the seed of the grass species ''Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima ''Oryza glaberrima'', commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown i ...
, and
oats The oat (''Avena sativa''), sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name (usually in the plural, unlike other cereals and pseudocereals). While oats are suitable for human con ...
are also used. During the brewing process, fermentation of the starch
sugar Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Simple sugars, also called monosaccharides, include glucose, fructose, and galactose. Compound sugars, also called disaccharides or double ...
s in the
wort Wort () is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be fermented by the brewing yeast to produce alcohol. Wort ...
produces
ethanol Ethanol (abbr. EtOH; also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound. It is an Alcohol (chemistry), alcohol with the chemical formula . Its formula can be also written as or (an ethyl ...
and
carbonation Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid. In chemistry, the term is sometimes used in place of carboxylation, which refers to the formation of carboxylic acids. In inorganic ch ...
in the resulting beer.Barth, Roger. ''The Chemistry of Beer: The Science in the Suds'', Wiley 2013: . Most modern beer is brewed with
hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
, which add bitterness and other flavours and act as a natural
preservative A preservative is a substance or a chemical that is added to products such as food products, beverages, pharmaceutical drugs, paints, biological samples, cosmetics, wood, and many other products to prevent decomposition by microbial growth or by ...
and
stabilizing agent In industrial chemistry, a stabilizer or stabiliser is a chemical that is used to prevent degradation. File:BigPhosphite31570-04-4.png, Tris(2,4-di-tert-butylphenyl)phosphite is a widely used stabilizer in polymers. File:HALSgeneric.png, Partial ...
. Other flavouring agents such as
gruit Gruit (alternately grut or gruyt) is a herb mixture used for bittering and flavouring beer, popular before the extensive use of hops. The terms gruit and grut ale may also refer to the beverage produced using gruit. Historically, gruit is the te ...
, herbs, or fruits may be included or used instead of hops. In commercial brewing, the natural carbonation effect is often removed during processing and replaced with forced carbonation. Some of humanity's earliest known writings refer to the production and distribution of beer: the
Code of Hammurabi The Code of Hammurabi is a Babylonian legal text composed 1755–1750 BC. It is the longest, best-organised, and best-preserved legal text from the ancient Near East. It is written in the Old Babylonian dialect of Akkadian, purportedly by Hamm ...
included laws regulating beer and beer parlours, and "The Hymn to
Ninkasi Ninkasi was the Mesopotamian goddess of beer and brewing. It is possible that in the first millennium BCE she was known under the variant name Kurunnītu, derived from a term referring to a type of high quality beer. She was associated with both ...
", a prayer to the Mesopotamian goddess of beer, served as both a prayer and as a method of remembering the recipe for beer in a culture with few literate people. Beer is distributed in bottles and cans and is also commonly available on draught, particularly in pubs and bars. The brewing industry is a global business, consisting of several dominant
multinational companies A multinational company (MNC), also referred to as a multinational enterprise (MNE), a transnational enterprise (TNE), a transnational corporation (TNC), an international corporation or a stateless corporation with subtle but contrasting senses, i ...
and many thousands of smaller producers ranging from
brewpubs Craft beer is a beer that has been made by craft breweries. They produce smaller amounts of beer, typically less than large breweries, and are often independently owned. Such breweries are generally perceived and marketed as having an emphasis o ...
to regional breweries. The strength of modern beer is usually around 4% to 6%
alcohol by volume Alcohol by volume (abbreviated as ABV, abv, or alc/vol) is a standard measure of how much alcohol (ethanol) is contained in a given volume of an alcoholic beverage (expressed as a volume percent). It is defined as the number of millilitres (mL) o ...
(ABV), although it may vary between 0.5% and 20%, with some breweries creating examples of 40% ABV and above. Beer forms part of the culture of many nations and is associated with social traditions such as
beer festival A beer festival is an event at which a variety of beers are available for purchase. There may be a theme, for instance beers from a particular area, or a particular brewing style such as winter ales. Asia * Singapore holds an annual Beer Festiva ...
s, as well as a rich
pub A pub (short for public house) is a kind of drinking establishment which is licensed to serve alcoholic drinks for consumption on the premises. The term ''public house'' first appeared in the United Kingdom in late 17th century, and was ...
culture involving activities like
pub crawl A pub crawl (sometimes called a bar tour, bar crawl or bar-hopping) is the act of visiting multiple pubs or bars in a single session. Background Many European cities have public pub crawls that serve as social gatherings for local expatriates an ...
ing,
pub quiz A pub quiz is a quiz held in a pub or bar. These events are also called quiz nights, trivia nights, or bar trivia and may be held in other settings. Pub quizzes may attract customers to a pub who are not found there on other days. The pub quiz is ...
zes and
pub games A pub game is one which is traditionally played inside or outside a pub or bar. Most pub games date back many years and are rooted in village culture. Many derive from older outdoor sports. Pub games can be loosely grouped into throwing games, d ...
. When beer is distilled, the resulting liquor is a form of
whisky Whisky or whiskey is a type of distilled alcoholic beverage made from fermented grain mash. Various grains (which may be malted) are used for different varieties, including barley, corn, rye, and wheat. Whisky is typically aged in wooden c ...
.


Etymology

In early forms of English, and in the Scandinavian languages, the usual word for beer was the word whose Modern English form is ''
ale Ale is a Type of beer, type of beer brewed using a Warm fermentation, warm fermentation method, resulting in a sweet, full-bodied and fruity taste. Historically, the term referred to a drink brewed without hops. As with most beers, ale typicall ...
''. The word ''beer'' comes into present-day English from
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlement of Britain, Anglo ...
, itself from
Common Germanic Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the reconstructed proto-language of the Germanic branch of the Indo-European languages. Proto-Germanic eventually developed from pre-Proto-Germanic into three Germanic branc ...
; although the word is not attested in the
East Germanic East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fac ...
branch of the language-family, it is found throughout the
West Germanic The West Germanic languages constitute the largest of the three branches of the Germanic family of languages (the others being the North Germanic and the extinct East Germanic languages). The West Germanic branch is classically subdivided into t ...
and
North Germanic The North Germanic languages make up one of the three branches of the Germanic languages—a sub-family of the Indo-European languages—along with the West Germanic languages and the extinct East Germanic languages. The language group is also r ...
dialects (modern
Dutch Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People E ...
and
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
,
Old Norse Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and t ...
). The earlier etymology of the word is debated: the three main theories are that the word originates in Proto-Germanic (putatively from
Proto-Indo-European Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. Its proposed features have been derived by linguistic reconstruction from documented Indo-European languages. No direct record of Proto-Indo-E ...
), meaning '
brewer's yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitu ...
, beer dregs'; that it is related to the word ''
barley Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley pr ...
''; or that it was somehow borrowed from Latin 'to drink'.Christine Fell,
Old English ''Beor''
’, ''Leeds Studies in English'', n.s., 8 (1975), 76–95.
In Old English and Old Norse, the ''beer''-word did not denote a malted alcoholic drink like ale, but a sweet, potent drink made from honey and the juice of one or more fruits other than grapes, much less ubiquitous than ale, perhaps served in the kind of tiny drinking cups sometimes found in early medieval grave-goods: a drink more like
mead Mead () is an alcoholic beverage made by fermenting honey mixed with water, and sometimes with added ingredients such as fruits, spices, grains, or hops. The alcoholic content ranges from about 3.5% ABV to more than 20%. The defining character ...
or
cider Cider ( ) is an alcoholic beverage made from the fermented juice of apples. Cider is widely available in the United Kingdom (particularly in the West Country) and the Republic of Ireland. The UK has the world's highest per capita consumption, ...
. In German, however, the meaning of the ''beer''-word expanded to cover the meaning of the ''ale''-word already before our earliest surviving written evidence. As German hopped ale became fashionable in England in the late Middle Ages, the English word ''beer'' took on the German meaning, and thus in English too ''beer'' came during the early modern period to denote hopped, malt-based alcoholic drinks.


History

Beer is one of the world's oldest prepared alcoholic drinks. The earliest archaeological evidence of fermentation consists of 13,000-year-old residues of a beer with the consistency of gruel, used by the semi-nomadic
Natufian The Natufian culture () is a Late Epipaleolithic archaeological culture of the Levant, dating to around 15,000 to 11,500 years ago. The culture was unusual in that it supported a sedentary or semi-sedentary population even before the introduction ...
s for ritual feasting, at the
Raqefet Cave Raqefet Cave (''Cyclamen Cave'') is a Late Natufian archaeological site located in Mount Carmel in the north of Israel. It was discovered in 1956. The site indicates plants were already used as food at Raqefet, before the advent of agriculture. ...
in the
Carmel Mountains Mount Carmel ( he, הַר הַכַּרְמֶל, Har haKarmel; ar, جبل الكرمل, Jabal al-Karmil), also known in Arabic as Mount Mar Elias ( ar, link=no, جبل مار إلياس, Jabal Mār Ilyās, lit=Mount Saint Elias/Elijah), is a c ...
near
Haifa Haifa ( he, חֵיפָה ' ; ar, حَيْفَا ') is the third-largest city in Israel—after Jerusalem and Tel Aviv—with a population of in . The city of Haifa forms part of the Haifa metropolitan area, the third-most populous metropol ...
in
Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
. There is evidence that beer was produced at
Göbekli Tepe Göbekli Tepe (, "Potbelly Hill"; known as ''Girê Mirazan'' or ''Xirabreşkê'' in Kurdish languages, Kurdish) is a Neolithic archaeological site in the Southeastern Anatolia Region of Turkey. Dated to the Pre-Pottery Neolithic, between 9500 ...
during the
Pre-Pottery Neolithic The Pre-Pottery Neolithic (PPN) represents the early Neolithic in the Levantine and upper Mesopotamian region of the Fertile Crescent, dating to  years ago, (10000 – 6500 BCE).Richard, Suzanne ''Near Eastern archaeology'' Eisenbrauns; il ...
(around 8500 BC to 5500 BC). The earliest clear chemical evidence of beer produced from
barley Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley pr ...
dates to about 3500–3100 BC, from the site of
Godin Tepe Godin Tepe is an archaeological site in western Iran, located in the valley of Kangavar in Kermanshah Province. Discovered in 1961, the site was excavated from 1965 to 1973 by a Canadian expedition headed by T. Cuyler Young Jr. and sponsored by ...
in the
Zagros Mountains The Zagros Mountains ( ar, جبال زاغروس, translit=Jibal Zaghrus; fa, کوه‌های زاگرس, Kuh hā-ye Zāgros; ku, چیاکانی زاگرۆس, translit=Çiyakani Zagros; Turkish: ''Zagros Dağları''; Luri: ''Kuh hā-ye Zāgro ...
of western
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
.McGovern, Patrick, ''Uncorking the Past'', 2009, . pp. 66–71. It is possible, but not proven, that it dates back even further—to about 10,000 BC, when cereal was first
farmed Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people t ...
. Beer is recorded in the written history of ancient Egypt, and archaeologists speculate that beer was instrumental in the formation of civilizations. Approximately 5000 years ago, workers in the city of
Uruk Uruk, also known as Warka or Warkah, was an ancient city of Sumer (and later of Babylonia) situated east of the present bed of the Euphrates River on the dried-up ancient channel of the Euphrates east of modern Samawah, Al-Muthannā, Iraq.Harm ...
(modern day Iraq) were paid by their employers with volumes of beer. During the building of the Great Pyramids in Giza, Egypt, each worker got a daily ration of four to five litres of beer, which served as both nutrition and refreshment that was crucial to the pyramids' construction. Some of the earliest Sumerian writings contain references to beer; examples include a prayer to the goddess
Ninkasi Ninkasi was the Mesopotamian goddess of beer and brewing. It is possible that in the first millennium BCE she was known under the variant name Kurunnītu, derived from a term referring to a type of high quality beer. She was associated with both ...
, known as "The Hymn to Ninkasi", which served as both a prayer and a method of remembering the recipe for beer in a culture with few literate people, and the ancient advice ("Fill your belly. Day and night make merry") to
Gilgamesh sux, , label=none , image = Hero lion Dur-Sharrukin Louvre AO19862.jpg , alt = , caption = Possible representation of Gilgamesh as Master of Animals, grasping a lion in his left arm and snake in his right hand, in an Assyr ...
, recorded in the ''
Epic of Gilgamesh The ''Epic of Gilgamesh'' () is an epic poetry, epic poem from ancient Mesopotamia, and is regarded as the earliest surviving notable literature and the second oldest religious text, after the Pyramid Texts. The literary history of Gilgamesh ...
'', by the ale-wife
Siduri Siduri, or more accurately Šiduri (Shiduri), is a character in the ''Epic of Gilgamesh''. She is described as an alewife. The oldest preserved version of the composition to contain the episode involving her leaves her nameless, and in the later s ...
may, at least in part, have referred to the consumption of beer. The
Ebla tablets The Ebla tablets are a collection of as many as 1,800 complete clay tablets, 4,700 fragments, and many thousands of minor chips found in the palace archives of the ancient city of Ebla, Syria. The tablets were discovered by Italian archaeologist ...
, discovered in 1974 in
Ebla Ebla ( Sumerian: ''eb₂-la'', ar, إبلا, modern: , Tell Mardikh) was one of the earliest kingdoms in Syria. Its remains constitute a tell located about southwest of Aleppo near the village of Mardikh. Ebla was an important center t ...
,
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
, show that beer was produced in the city in 2500 BC. A fermented drink using rice and fruit was made in China around 7000 BC. Unlike
sake Sake, also spelled saké ( ; also referred to as Japanese rice wine), is an alcoholic beverage of Japanese origin made by fermenting rice that has been polished to remove the bran. Despite the name ''Japanese rice wine'', sake, and indee ...
, mold was not used to saccharify the rice (amylolytic fermentation); the rice was probably prepared for fermentation by
chewing Chewing or mastication is the process by which food is crushed and ground by teeth. It is the first step of digestion, and it increases the surface area of foods to allow a more efficient break down by enzymes. During the mastication process, th ...
or
malting Malting is the process of steeping, germinating and drying grain to convert it into malt. The malt is mainly used for brewing or whisky making, but can also be used to make malt vinegar or malt extract. Various grains are used for malting, most ...
. During the
Vedic period The Vedic period, or the Vedic age (), is the period in the late Bronze Age and early Iron Age of the history of India when the Vedic literature, including the Vedas (ca. 1300–900 BCE), was composed in the northern Indian subcontinent, betw ...
in
Ancient India According to consensus in modern genetics, anatomically modern humans first arrived on the Indian subcontinent from Africa between 73,000 and 55,000 years ago. Quote: "Y-Chromosome and Mt-DNA data support the colonization of South Asia by m ...
, there are records of consumption of the beer-like ''
sura A ''surah'' (; ar, سورة, sūrah, , ), is the equivalent of "chapter" in the Qur'an. There are 114 ''surahs'' in the Quran, each divided into '' ayats'' (verses). The chapters or ''surahs'' are of unequal length; the shortest surah ('' Al-K ...
''.
Xenophon Xenophon of Athens (; grc, wikt:Ξενοφῶν, Ξενοφῶν ; – probably 355 or 354 BC) was a Greek military leader, philosopher, and historian, born in Athens. At the age of 30, Xenophon was elected commander of one of the biggest Anci ...
noted that during his travels, beer was being produced in
Armenia Armenia (), , group=pron officially the Republic of Armenia,, is a landlocked country in the Armenian Highlands of Western Asia.The UNbr>classification of world regions places Armenia in Western Asia; the CIA World Factbook , , and ''Ox ...
. Almost any substance containing sugar can naturally undergo alcoholic fermentation, and can thus be utilized in the brewing of beer. It is likely that many cultures, on observing that a sweet liquid could be obtained from a source of starch, independently invented beer. Bread and beer increased prosperity to a level that allowed time for development of other technologies and contributed to the building of civilizations. Beer was spread through Europe by Germanic and
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
tribes as far back as 3000 BC, and it was mainly brewed on a domestic scale. The product that the early Europeans drank might not be recognised as beer by most people today. Alongside the basic starch source, the early European beers may have contained fruits, honey, numerous types of plants, spices and other substances such as
narcotic The term narcotic (, from ancient Greek ναρκῶ ''narkō'', "to make numb") originally referred medically to any psychoactive compound with numbing or paralyzing properties. In the United States, it has since become associated with opiates ...
herbs. What they did not contain was
hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
, as that was a later addition, first mentioned in Europe around 822 by a Carolingian Abbot and again in 1067 by
abbess An abbess (Latin: ''abbatissa''), also known as a mother superior, is the female superior of a community of Catholic nuns in an abbey. Description In the Catholic Church (both the Latin Church and Eastern Catholic), Eastern Orthodox, Coptic ...
Hildegard of Bingen Hildegard of Bingen (german: Hildegard von Bingen; la, Hildegardis Bingensis; 17 September 1179), also known as Saint Hildegard and the Sibyl of the Rhine, was a German Benedictine abbess and polymath active as a writer, composer, philosopher ...
. In 1516,
William IV William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until his death in 1837. The third son of George III, William succeeded h ...
, Duke of Bavaria, adopted the ''
Reinheitsgebot The ''Reinheitsgebot'' (, literally "purity order") is a series of regulations limiting the ingredients in beer in Germany and the states of the former Holy Roman Empire. The best known version of the law was adopted in Bavaria in 1516 (by Will ...
'' (purity law), perhaps the oldest food-quality regulation still in use in the 21st century, according to which the only allowed ingredients of beer are water,
hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
, and barley-
malt Malt is germinated cereal grain that has been dried in a process known as " malting". The grain is made to germinate by soaking in water and is then halted from germinating further by drying with hot air. Malted grain is used to make beer, wh ...
. Beer produced before the
Industrial Revolution The Industrial Revolution was the transition to new manufacturing processes in Great Britain, continental Europe, and the United States, that occurred during the period from around 1760 to about 1820–1840. This transition included going f ...
continued to be made and sold on a domestic scale, although by the 7th century AD, beer was also being produced and sold by European
monasteries A monastery is a building or complex of buildings comprising the domestic quarters and workplaces of monastics, monks or nuns, whether living in communities or alone (hermits). A monastery generally includes a place reserved for prayer which ...
. During the Industrial Revolution, the production of beer moved from
artisan An artisan (from french: artisan, it, artigiano) is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art ...
al manufacture to industrial manufacture, and domestic manufacture ceased to be significant by the end of the 19th century. The development of
hydrometer A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity. A hydrometer ...
s and
thermometer A thermometer is a device that temperature measurement, measures temperature or a temperature gradient (the degree of hotness or coldness of an object). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a merc ...
s changed brewing by allowing the brewer more control of the process and greater knowledge of the results. In 1912, brown bottles began to be used by ''
Joseph Schlitz Brewing Company The Joseph Schlitz Brewing Company was an American brewery based in Milwaukee, Wisconsin, and once the largest producer of beer in the United States. Its namesake beer, Schlitz (), was known as "The beer that made Milwaukee famous" and was adve ...
'' of
Milwaukee, Wisconsin Milwaukee ( ), officially the City of Milwaukee, is both the most populous and most densely populated city in the U.S. state of Wisconsin and the county seat of Milwaukee County, Wisconsin, Milwaukee County. With a population of 577,222 at th ...
in the United States. This innovation has since been accepted worldwide and prevents harmful rays from destroying the quality and stability of beer. As of 2007, the brewing industry is a global business, consisting of several dominant multinational companies and many thousands of smaller producers ranging from
brewpub Craft beer is a beer that has been made by craft breweries. They produce smaller amounts of beer, typically less than large breweries, and are often independently owned. Such breweries are generally perceived and marketed as having an emphasis o ...
s to regional breweries. As of 2006, more than , the equivalent of a cube 510 metres on a side, of beer are sold per year, producing total global revenues of US$294.5 billion. In 2010, China's beer consumption hit , or nearly twice that of the United States, but only 5 per cent sold were premium draught beers, compared with 50 per cent in France and Germany. A recent and widely publicized study suggests that sudden decreases in barley production due to extreme drought and heat could in the future cause substantial volatility in the availability and price of beer.


Brewing

The process of making beer is known as brewing. A dedicated building for the making of beer is called a brewery, though beer can be made in the home and has been for much of its history, in which case the brewing location is often called a
brewhouse A brewhouse is a building made for brewing beer and ale. This could be a part of a specialized brewery operation, but historically a brewhouse is a private building only meant for domestic production. Larger households, such as noble estates, o ...
. A company that makes beer is called either a brewery or a
brewing company A brewery or brewing company is a business that makes and sells beer. The place at which beer is commercially made is either called a brewery or a beerhouse, where distinct sets of brewing equipment are called plant. The commercial brewing of bee ...
. Beer made on a domestic scale for non-commercial reasons is today usually classified as
homebrewing Homebrewing is the brewing of beer or other alcoholic beverages on a small scale for personal, non-commercial purposes. Supplies, such as kits and fermentation tanks, can be purchased locally at specialty stores or online. Beer was brewed dom ...
regardless of where it is made, though most homebrewed beer is made in the home. Historically, domestic beer was what's called
farmhouse ale Farmhouse ale is an ancient European tradition where farmers brewed beer for consumption on the farm from their own grain. Most farmers would brew for Christmas and/or the late summer work, but in areas where they had enough grain farmers would u ...
. Brewing beer has been subject to legislation and taxation for millennia, and from the late 19th century taxation largely restricted brewing to commercial operations only in the UK. However, the UK government relaxed legislation in 1963, followed by Australia in 1972 and the US in 1978, though individual states were allowed to pass their own laws limiting production,Papazian ''The Complete Joy of Homebrewing (3rd Edition)'', allowing homebrewing to become a popular hobby. The purpose of brewing is to convert the starch source into a sugary liquid called
wort Wort () is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be fermented by the brewing yeast to produce alcohol. Wort ...
and to convert the wort into the alcoholic drink known as beer in a fermentation process effected by
yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitut ...
. The first step, where the wort is prepared by mixing the starch source (normally malted barley) with hot water, is known as "
mashing In brewing and distilling, mashing is the process of combining a mix of ground grains – typically malted barley with supplementary grains such as corn, sorghum, rye, or wheat – known as the "grain bill" with water and then heating the mixtu ...
". Hot water (known as "liquor" in brewing terms) is mixed with crushed malt or malts (known as "
grist Grist is grain that has been separated from its chaff in preparation for grinding. It can also mean grain that has been ground at a gristmill. Its etymology derives from the verb ''grind.'' Grist can be ground into meal or flour, depending on ho ...
") in a
mash tun In brewing and distilling, mashing is the process of combining a mix of ground grains – typically malted barley with supplementary grains such as corn, sorghum, rye, or wheat – known as the "grain bill" with water and then heating the ...
. The mashing process takes around 1 to 2 hours, during which the starches are converted to sugars, and then the sweet wort is drained off the grains. The grains are then washed in a process known as "sparging". This washing allows the brewer to gather as much of the fermentable liquid from the grains as possible. The process of filtering the
spent grain Brewer's spent grain (BSG) or draff is a food waste that is a byproduct of the brewing industry that makes up 85 percent of brewing waste. BSG is obtained as a mostly solid residue after wort production in the brewing process. The product is i ...
from the wort and sparge water is called ''wort separation''. The traditional process for wort separation is
lautering Lautering () is the beer brewing process that separates the mash into clear liquid wort and residual grain. Lautering usually consists of three steps: mashout, recirculation, and sparging. Mashout Mashout is the term for raising the temperature ...
, in which the grain bed itself serves as the filter medium. Some modern breweries prefer the use of filter frames which allow a more finely ground grist. Most modern breweries use a continuous sparge, collecting the original wort and the sparge water together. However, it is possible to collect a second or even third wash with the not quite spent grains as separate batches. Each run would produce a weaker wort and thus a weaker beer. This process is known as second (and third) runnings. Brewing with several runnings is called parti gyle brewing. The sweet wort collected from sparging is put into a kettle, or "copper" (so-called because these vessels were traditionally made from copper), and boiled, usually for about one hour. During boiling, water in the wort evaporates, but the sugars and other components of the wort remain; this allows more efficient use of the starch sources in the beer. Boiling also destroys any remaining enzymes left over from the mashing stage.
Hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
are added during boiling as a source of bitterness, flavour and aroma. Hops may be added at more than one point during the boil. The longer the hops are boiled, the more bitterness they contribute, but the less hop flavour and aroma remains in the beer. After boiling, the hopped wort is cooled, ready for the yeast. In some breweries, the hopped wort may pass through a hopback, which is a small vat filled with hops, to add aromatic hop flavouring and to act as a filter; but usually the hopped wort is simply cooled for the fermenter, where the yeast is added. During fermentation, the wort becomes beer in a process that requires a week to months depending on the type of yeast and strength of the beer. In addition to producing
ethanol Ethanol (abbr. EtOH; also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound. It is an Alcohol (chemistry), alcohol with the chemical formula . Its formula can be also written as or (an ethyl ...
, fine
particulate matter Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter (PM) or suspended particulate matter (SPM) – are microscopic particles of solid or liquid matter suspended in the air. The ter ...
suspended in the wort settles during fermentation. Once fermentation is complete, the yeast also settles, leaving the beer clear. During fermentation most of the
carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
is allowed to escape through a
trap A trap is a mechanical device used to capture or restrain an animal for purposes such as hunting, pest control, or ecological research. Trap or TRAP may also refer to: Art and entertainment Films and television * ''Trap'' (2015 film), Fil ...
and the beer is left with carbonation of only about one atmosphere of pressure. The carbonation is often increased either by transferring the beer to a
pressure vessel A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. Construction methods and materials may be chosen to suit the pressure application, and will depend on the size o ...
such as a
keg A keg is a small barrel. Wooden kegs made by a cooper were used to transport nails, gunpowder, and a variety of liquids. A keg is normally now constructed of stainless steel, although aluminium can be used if it is coated with plastic on th ...
and introducing pressurized carbon dioxide, or by transferring it before the fermentation is finished so that carbon dioxide pressure builds up inside the container as the fermentation finishes. Sometimes the beer is put unfiltered (so it still contains yeast) into bottles with some
added sugar Added sugars or free sugars are sugar carbohydrates (caloric sweeteners) added to food and beverages at some point before their consumption. These include added carbohydrates (monosaccharides and disaccharides), and more broadly, sugars natural ...
, which then produces the desired amount of carbon dioxide inside the bottle. Fermentation is sometimes carried out in two stages, primary and secondary. Once most of the alcohol has been produced during primary fermentation, the beer is transferred to a new vessel and allowed a period of secondary fermentation. Secondary fermentation is used when the beer requires long storage before packaging or greater clarity. When the beer has fermented, it is packaged either into casks for
cask ale Real ale is the name coined by the Campaign for Real Ale (CAMRA) for beer that is "brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous car ...
or kegs, aluminium cans, or bottles for other sorts of beer.


Ingredients

The basic ingredients of beer are water; a starch source, such as
malt Malt is germinated cereal grain that has been dried in a process known as " malting". The grain is made to germinate by soaking in water and is then halted from germinating further by drying with hot air. Malted grain is used to make beer, wh ...
ed
barley Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley pr ...
, or malted
maize Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. Th ...
(such as used in the preparation of
Tiswin Tiswin (also known as Tesgüino and Tejuino in Mexico) is an alcoholic beverage brewed from corn. Tiswin is also the sacred saguaro wine of the Tohono O'odham, a group of aboriginal Americans who reside primarily in the Sonoran Desert of the south ...
and
Tesgüino Tesgüino is an artisanal corn beer produced by several Yuto-Aztec people.El T ...
), able to be saccharified (converted to sugars) then fermented (converted into ethanol and carbon dioxide); a
brewer's yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitu ...
to produce the fermentation; and a flavouring such as
hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
. A mixture of starch sources may be used, with a secondary carbohydrate source, such as maize (corn), rice, wheat, or sugar, often being termed an adjunct, especially when used alongside malted barley. Less widely used starch sources include
millet Millets () are a highly varied group of small-seeded grasses, widely grown around the world as cereal crops or grains for fodder and human food. Most species generally referred to as millets belong to the tribe Paniceae, but some millets al ...
,
sorghum ''Sorghum'' () is a genus of about 25 species of flowering plants in the grass family (Poaceae). Some of these species are grown as cereals for human consumption and some in pastures for animals. One species is grown for grain, while many othe ...
and
cassava ''Manihot esculenta'', common name, commonly called cassava (), manioc, or yuca (among numerous regional names), is a woody shrub of the spurge family, Euphorbiaceae, native to South America. Although a perennial plant, cassava is extensively ...
root in Africa, and potato in Brazil, and
agave ''Agave'' (; ; ) is a genus of monocots native to the hot and arid regions of the Americas and the Caribbean, although some ''Agave'' species are also native to tropical areas of North America, such as Mexico. The genus is primarily known for ...
in Mexico, among others. The amount of each starch source in a beer recipe is collectively called the
grain bill Mash ingredients, mash bill, mashbill, or grain bill are the materials that brewers use to produce the wort that they then ferment into alcohol. Mashing is the act of creating and extracting fermentable and non-fermentable sugars and flavor c ...
.
Water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ...
is the main ingredient of beer, accounting for 93% of its weight. Though water itself is, ideally, flavorless, its level of dissolved minerals, specifically, bicarbonate ion, does influence beer's finished taste. Due to the
mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. ( ...
properties of each
region In geography, regions, otherwise referred to as zones, lands or territories, are areas that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and t ...
's water, specific areas were originally the sole producers of certain types of beer, each identifiable by regional characteristics. Regional
geology Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...
accords that
Dublin Dublin (; , or ) is the capital and largest city of Republic of Ireland, Ireland. On a bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, bordered on the south by the Dublin Mountains, a part of th ...
's
hard water Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbo ...
is well-suited to making
stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
, such as
Guinness Guinness () is an Irish dry stout that originated in the brewery of Arthur Guinness at St. James's Gate, Dublin, Ireland, in 1759. It is one of the most successful alcohol brands worldwide, brewed in almost 50 countries, and available in ove ...
, while the
Plzeň Region Plzeň Region ( cs, Plzeňský kraj; german: Pilsner Region) is an administrative unit (''kraj'') in the western part of Bohemia in the Czech Republic. It is named after its capital Plzeň (English, german: Pilsen). In terms of area, Plzeň Reg ...
's soft water is ideal for brewing
Pilsner Pilsner (also pilsener or simply pils) is a type of pale lager. It takes its name from the Bohemian city of Plzeň (german: Pilsen), where the world's first pale lager (now known as Pilsner Urquell) was produced in 1842 by Pilsner Urquell Brewe ...
(
pale lager Pale lager is a very pale-to-golden-colored lager beer with a well- attenuated body and a varying degree of noble hop bitterness. The brewing process for this beer developed in the mid-19th century, when Gabriel Sedlmayr took pale ale brewing ...
), such as
Pilsner Urquell Pilsner Urquell (; cs, Plzeňský prazdroj ) is a lager beer brewed by the Pilsner Urquell Brewery in Plzeň (German name: Pilsen), Czech Republic. Pilsner Urquell was the world's first pale lager, and its popularity meant it was much copied, ...
. The waters of Burton in England contain
gypsum Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. ...
, which benefits making
pale ale Pale ale is a golden to amber coloured beer style brewed with pale malt. The term first appeared around 1703 for beers made from malts dried with high-carbon coke, which resulted in a lighter colour than other beers popular at that time. Diff ...
to such a degree that brewers of pale ales will add gypsum to the local water in a process known as
Burtonisation Beer is produced through steeping a sugar source (commonly Malted cereal grains) in water and then fermenting with yeast. Brewing has taken place since around the 6th millennium BC, and archeological evidence suggests that this technique was ...
. The starch source, termed as the "
mash ingredients Mash ingredients, mash bill, mashbill, or grain bill are the materials that brewers use to produce the wort that they then ferment into alcohol. Mashing is the act of creating and extracting fermentable and non-fermentable sugars and flavor co ...
", in a beer provides the fermentable material and is a key determinant of the strength and flavour of the beer. The most common starch source used in beer is malted grain. Grain is malted by soaking it in water, allowing it to begin
germination Germination is the process by which an organism grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, fer ...
, and then drying the partially germinated grain in a kiln. Malting grain produces enzymes that convert starches in the grain into fermentable sugars. Different roasting times and temperatures are used to produce different colours of malt from the same grain. Darker malts will produce darker beers. Nearly all beer includes barley malt as the majority of the starch. This is because its fibrous hull remains attached to the grain during threshing. After malting, barley is milled, which finally removes the hull, breaking it into large pieces. These pieces remain with the grain during the mash, and act as a filter bed during
lautering Lautering () is the beer brewing process that separates the mash into clear liquid wort and residual grain. Lautering usually consists of three steps: mashout, recirculation, and sparging. Mashout Mashout is the term for raising the temperature ...
, when sweet
wort Wort () is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be fermented by the brewing yeast to produce alcohol. Wort ...
is separated from insoluble grain material. Other malted and unmalted grains (including wheat, rice,
oats The oat (''Avena sativa''), sometimes called the common oat, is a species of cereal grain grown for its seed, which is known by the same name (usually in the plural, unlike other cereals and pseudocereals). While oats are suitable for human con ...
, and rye, and less frequently, corn and sorghum) may be used. Some brewers have produced
gluten-free beer Gluten-free beer is beer made from ingredients that do not contain gluten such as millet, rice, sorghum, buckwheat or corn (maize). People who have gluten intolerance (including celiac disease and dermatitis herpetiformis sufferers) have a reaction ...
, made with sorghum with no barley malt, for those who cannot consume
gluten Gluten is a structural protein naturally found in certain cereal grains. Although "gluten" often only refers to wheat proteins, in medical literature it refers to the combination of prolamin and glutelin proteins naturally occurring in all grain ...
-containing grains like wheat, barley, and rye. Flavouring beer is the sole major commercial use of
hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
. The flower of the hop vine is used as a flavouring and preservative agent in nearly all beer made today. The flowers themselves are often called "hops". The first historical mention of the use of hops in beer was from 822 AD in monastery rules written by Adalhard the Elder, also known as
Adalard of Corbie Adalard of Corbie ( la, Adalhardus Corbeiensis; c. 751, Huise – 2 January 827) was son of Bernard the son of Charles Martel and half-brother of Pepin; Charlemagne was his cousin. He ia recognised as a saint within the Catholic Church. Biograph ...
, though the date normally given for widespread cultivation of hops for use in beer is the thirteenth century. Before the thirteenth century, and until the sixteenth century, during which hops took over as the dominant flavouring, beer was flavoured with other plants; for instance,
grains of paradise ''Aframomum melegueta'' is a species in the ginger family, Zingiberaceae, and closely related to cardamom. Its seeds are used as a spice (ground or whole); it imparts a pungent, black-pepper-like flavor with hints of citrus. It is commonly ...
or '' alehoof''. Combinations of various aromatic herbs, berries, and even ingredients like wormwood would be combined into a mixture known as
gruit Gruit (alternately grut or gruyt) is a herb mixture used for bittering and flavouring beer, popular before the extensive use of hops. The terms gruit and grut ale may also refer to the beverage produced using gruit. Historically, gruit is the te ...
and used as hops are now used. Some beers today, such as Fraoch' by the Scottish Heather Ales company and Cervoise Lancelot by the French Brasserie-Lancelot company, use plants other than hops for flavouring. Hops contain several characteristics that brewers desire in beer. Hops contribute a bitterness that balances the sweetness of the malt; the bitterness of beers is measured on the
International Bitterness Units scale When drinking beer, there are many factors to be considered. Principal among them are bitterness, the variety of flavours present in the beverage and their intensity, alcohol content, and colour. Standards for those characteristics allow a more ...
. Hops contribute floral, citrus, and herbal aromas and flavours to beer. Hops have an
antibiotic An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of ...
effect that favours the activity of brewer's yeast over less desirable microorganisms and aids in "
head A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may ...
retention", the length of time that a foamy head created by carbonation will last. The acidity of hops is a preservative. Yeast is the
microorganism A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in olde ...
that is responsible for fermentation in beer. Yeast metabolises the sugars extracted from grains, which produces
alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...
and
carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
, and thereby turns
wort Wort () is the liquid extracted from the mashing process during the brewing of beer or whisky. Wort contains the sugars, the most important being maltose and maltotriose, that will be fermented by the brewing yeast to produce alcohol. Wort ...
into beer. In addition to fermenting the beer, yeast influences the character and flavour. The dominant types of yeast used to make beer are the
top-fermenting Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brewer, ...
''
Saccharomyces cerevisiae ''Saccharomyces cerevisiae'' () (brewer's yeast or baker's yeast) is a species of yeast (single-celled fungus microorganisms). The species has been instrumental in winemaking, baking, and brewing since ancient times. It is believed to have been o ...
'' and bottom-fermenting ''
Saccharomyces pastorianus ''Saccharomyces pastorianus'' is a yeast used industrially for the production of lager beer, and was named in honour of Louis Pasteur by the German Max Reess in 1870. This yeast's complicated genome appears to be the result of hybridisation bet ...
''. ''
Brettanomyces ''Brettanomyces'' is a non-spore forming genus of yeast in the family Saccharomycetaceae, and is often colloquially referred to as "Brett". The genus name ''Dekkera'' is used interchangeably with ''Brettanomyces'', as it describes the teleomorph ...
'' ferments
lambic Lambic () is a type of beer brewed in the Pajottenland region of Belgium southwest of Brussels and in Brussels itself since the 13th century. Types of lambic beers include gueuze, kriek lambic and framboise. Lambic differs from most other beers ...
s, and ''
Torulaspora delbrueckii ''Torulaspora delbrueckii'' is a ubiquitous yeast species with both wild and anthropic habitats. The type strain of ''T. delbrueckii'' is CBS 1146T, equivalent to CLIB 230 or ATCC 10662etc. The type strain of ''T. delbrueckii'' CBS 1146 T was seq ...
'' ferments Bavarian
weissbier Wheat beer is a top-fermented beer which is brewed with a large proportion of wheat relative to the amount of malted barley. The two main varieties are German ''Weizenbier'' and Belgian ''witbier''; other types include Lambic (made with wild ye ...
. Before the role of yeast in fermentation was understood, fermentation involved wild or airborne yeasts. A few styles such as
lambics Lambic () is a type of beer brewed in the Pajottenland region of Belgium southwest of Brussels and in Brussels itself since the 13th century. Types of lambic beers include gueuze, kriek lambic and framboise. Lambic differs from most other beers ...
rely on this method today, but most modern fermentation adds pure yeast
cultures Culture () is an umbrella term which encompasses the social behavior, institutions, and norms found in human societies, as well as the knowledge, beliefs, arts, laws, customs, capabilities, and habits of the individuals in these groups.Tyl ...
. Some brewers add one or more clarifying agents or
finings Finings are substances that are usually added at or near the completion of the processing of brewing wine, beer, and various nonalcoholic juice beverages. They are used to remove organic compounds, either to improve clarity or adjust flavor or ar ...
to beer, which typically
precipitate In an aqueous solution, precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed is called the precipitate. In case of an inorganic chemical reaction leading ...
(collect as a solid) out of the beer along with protein solids and are found only in trace amounts in the finished product. This process makes the beer appear
bright Bright may refer to: Common meanings *Bright, an adjective meaning giving off or reflecting illumination; see Brightness *Bright, an adjective meaning someone with intelligence People * Bright (surname) * Bright (given name) *Bright, the stage na ...
and clean, rather than the cloudy appearance of ethnic and older styles of beer such as
wheat beer Wheat beer is a top-fermented beer which is brewed with a large proportion of wheat relative to the amount of malted barley. The two main varieties are German ''Weizenbier'' and Belgian ''witbier''; other types include Lambic (made with wild ye ...
s. Examples of clarifying agents include
isinglass Isinglass () is a substance obtained from the dried swim bladders of fish. It is a form of collagen used mainly for the clarification or fining of some beer and wine. It can also be cooked into a paste for specialised gluing purposes. The E ...
, obtained from
swimbladder The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth w ...
s of fish; Irish moss, a seaweed; kappa
carrageenan Carrageenans or carrageenins ( ; ) are a family of natural linear sulfated polysaccharides that are extracted from red edible seaweeds. Carrageenans are widely used in the food industry, for their gelling, thickening, and stabilizing properties. T ...
, from the seaweed ''
Kappaphycus cottonii ''Kappaphycus'' is a genus of red algae. Species are distributed in the waters of East Africa, Indonesia, Malaysia, Hainan Island, the Philippines, and Micronesia.Guiry, M. D. In: Guiry, M. D. & G. M. Guiry. 2013''Kappaphycus''.AlgaeBase. Natio ...
'';
Polyclar Polyvinylpolypyrrolidone (polyvinyl polypyrrolidone, PVPP, crospovidone, crospolividone, or E1202) is a highly cross-linked modification of polyvinylpyrrolidone (PVP). The cross-linked form of PVP is used as a disintegrant (see also excipients) in ...
(artificial); and
gelatin Gelatin or gelatine (from la, gelatus meaning "stiff" or "frozen") is a translucent, colorless, flavorless food ingredient, commonly derived from collagen taken from animal body parts. It is brittle when dry and rubbery when moist. It may also ...
. If a beer is marked "suitable for vegans", it was clarified either with seaweed or with artificial agents.


Brewing industry

The history of breweries in the 21st century has included larger breweries absorbing smaller breweries in order to ensure
economy of scale In microeconomics, economies of scale are the cost advantages that enterprises obtain due to their scale of operation, and are typically measured by the amount of output produced per unit of time. A decrease in cost per unit of output enables a ...
. In 2002,
South African Breweries South African Breweries (officially The South African Breweries Limited, informally SAB) is a major brewery headquartered in Johannesburg, South Africa and was a wholly owned subsidiary of SABMiller until its interests were sold to Anheuser-Bus ...
bought the North American
Miller Brewing Company The Miller Brewing Company is an American brewery and beer company in Milwaukee, Wisconsin. It was founded in 1855 by Frederick Miller. Molson Coors acquired the full global brand portfolio of Miller Brewing Company in 2016, and operates the M ...
to found
SABMiller SABMiller plc was a South African multinational brewing and beverage company headquartered in Woking, England on the outskirts of London until 10 October 2016 when it was acquired by Anheuser-Busch InBev. Prior to that date, it was the world's ...
, becoming the second largest brewery, after North American
Anheuser-Busch Anheuser-Busch Companies, LLC is an American brewing company headquartered in St. Louis, Missouri. Since 2008, it has been wholly owned by Anheuser-Busch InBev SA/NV (AB InBev), now the world's largest brewing company, which owns multiple glo ...
. In 2004, the Belgian
Interbrew Interbrew is subsidiary of Anheuser-Busch InBev SA/NV is based in Breda, Netherlands. It has one subsidiary, Ambev S.A. of São Paulo, Brazil. Brands Interbrew brands have historically included Budweiser, Stella Artois, Boddingtons, Beck's, S ...
was the third largest brewery by volume and the Brazilian AmBev was the fifth largest. They merged into
InBev InBev () is a brewing company that resulted from the merger between Belgium-based company Interbrew and Brazilian brewer AmBev which took place in 2004. It existed independently until the acquisition of Anheuser-Busch in 2008, which formed Anheu ...
, becoming the largest brewery. In 2007, SABMiller surpassed InBev and Anheuser-Bush when it acquired
Royal Grolsch Grolsch Brewery (Koninklijke Grolsch N.V. - "Royal Grolsch"), known simply as Grolsch (), is a Dutch brewery founded in 1615 by Willem Neerfeldt in Groenlo. In 1895 the de Groen family bought the brewery. They had started their own brewery in ...
, brewer of Dutch premium beer brand Grolsch in 2007. In 2008, when InBev (the second-largest) bought Anheuser-Busch (the third largest), the new
Anheuser-Busch InBev Anheuser-Busch InBev SA/NV, commonly known as AB InBev, is an American-Belgian multinational drink and brewing company based in Leuven, Belgium. AB InBev has a global functional management office in New York City, and regional headquarters ...
company became again the largest brewer in the world. , according to the market research firm Technavio,
AB InBev Anheuser-Busch InBev SA/NV, commonly known as AB InBev, is an American-Belgian multinational drink and brewing company based in Leuven, Belgium. AB InBev has a global functional management office in New York City, and regional headquarters ...
remains the largest brewing company in the world, with
Heineken Heineken Lager Beer ( nl, Heineken Pilsener), or simply Heineken () is a pale lager beer with 5% alcohol by volume produced by the Dutch brewing company Heineken N.V. Heineken beer is sold in a green bottle with a red star. History On 15 Febr ...
second,
CR Snow CR Snow (officially China Resources Snow Breweries Ltd.) is a brewing company with its headquarters in Beijing, China. Originally known as Shenyang Snow Beer Company before acquired by China Resources Enterprise, it was a joint venture between ...
third, Carlsberg fourth, and
Molson Coors The Molson Coors Beverage Company is an American-Canadian multinational drink and brewing company incorporated under Delaware General Corporation Law and headquartered in Golden, Colorado and Montreal, Quebec. Molson Coors was formed in 2005 ...
fifth. A
microbrewery Craft beer is a beer that has been made by craft breweries. They produce smaller amounts of beer, typically less than large breweries, and are often independently owned. Such breweries are generally perceived and marketed as having an emphasis o ...
, or craft brewery, produces a limited amount of beer. The maximum amount of beer a brewery can produce and still be classed as a microbrewery varies by region and by authority; in the US it is a year. A brewpub is a type of microbrewery that incorporates a
pub A pub (short for public house) is a kind of drinking establishment which is licensed to serve alcoholic drinks for consumption on the premises. The term ''public house'' first appeared in the United Kingdom in late 17th century, and was ...
or other
drinking establishment A drinking establishment is a business whose primary function is the serving of alcoholic beverages for consumption on the premises. Some establishments may also serve food, or have entertainment, but their main purpose is to serve alcoholic bev ...
. The highest density of breweries in the world, most of them microbreweries, exists in the German Region of
Franconia Franconia (german: Franken, ; Franconian dialect: ''Franggn'' ; bar, Frankn) is a region of Germany, characterised by its culture and Franconian dialect (German: ''Fränkisch''). The three administrative regions of Lower, Middle and Upper Fr ...
, especially in the district of
Upper Franconia Upper Franconia (german: Oberfranken) is a ''Regierungsbezirk'' (administrative 'Regierungs''region 'bezirk'' of the state of Bavaria, southern Germany. It forms part of the historically significant region of Franconia, the others being Middle F ...
, which has about 200 breweries. The
Benedictine , image = Medalla San Benito.PNG , caption = Design on the obverse side of the Saint Benedict Medal , abbreviation = OSB , formation = , motto = (English: 'Pray and Work') , foun ...
Weihenstephan Weihenstephan is a part of Freising north of Munich, Germany. It is located on the Weihenstephan Hill, named after the Weihenstephan Abbey, in the west of the city. Weihenstephan is known for: * the Benedictine Weihenstephan Abbey, founded 725, ...
brewery in
Bavaria Bavaria ( ; ), officially the Free State of Bavaria (german: Freistaat Bayern, link=no ), is a state in the south-east of Germany. With an area of , Bavaria is the largest German state by land area, comprising roughly a fifth of the total lan ...
, Germany, can trace its roots to the year 768, as a document from that year refers to a hop garden in the area paying a tithe to the monastery. The brewery was licensed by the City of
Freising Freising () is a university town in Bavaria, Germany, and the capital of the Freising ''Landkreis'' (district), with a population of about 50,000. Location Freising is the oldest town between Regensburg and Bolzano, and is located on the Is ...
in 1040, and therefore is the oldest working brewery in the world.Giebel, Wieland, ed (1992). The New Germany. Singapore: Höfer Press Pte. Ltd.


Varieties

While there are many types of beer brewed, the basics of brewing beer are shared across national and cultural boundaries. The traditional European brewing regions—
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
,
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
,
England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
and the
Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
—have local varieties of beer. English writer
Michael Jackson Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Dubbed the "King of Pop", he is regarded as one of the most significant cultural figures of the 20th century. Over a ...
, in his 1977 book ''The World Guide To Beer'', categorised beers from around the world in local style groups suggested by local customs and names.
Fred Eckhardt Otto Frederick Eckhardt (May 10, 1926 – August 10, 2015) was an American brewer, homebrewing advocate, and writer. Eckhardt is best remembered as a pioneer in the field of beer journalism, publishing a series of articles and books on the topic, ...
furthered Jackson's work in ''The Essentials of Beer Style'' in 1989. Top-fermented beers are most commonly produced with ''
Saccharomyces cerevisiae ''Saccharomyces cerevisiae'' () (brewer's yeast or baker's yeast) is a species of yeast (single-celled fungus microorganisms). The species has been instrumental in winemaking, baking, and brewing since ancient times. It is believed to have been o ...
'', a
top-fermenting yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitut ...
which clumps and rises to the surface, typically between . At these temperatures, yeast produces significant amounts of
ester In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides ar ...
s and other secondary flavour and aroma products, and the result is often a beer with slightly "fruity" compounds resembling apple, pear, pineapple,
banana A banana is an elongated, edible fruit – botanically a berry – produced by several kinds of large herbaceous flowering plants in the genus ''Musa''. In some countries, bananas used for cooking may be called "plantains", distinguis ...
, plum, or prune, among others. After the introduction of hops into England from Flanders in the 15th century, "ale" referred to an unhopped fermented drink, "beer" being used to describe a brew with an infusion of hops.
Real ale Real ale is the name coined by the Campaign for Real Ale (CAMRA) for beer that is "brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous car ...
is the term coined by the
Campaign for Real Ale The Campaign for Real Ale (CAMRA) is an independent voluntary consumer organisation headquartered in St Albans, England, which promotes real ale, cider and perry and traditional British pubs and clubs. With just under 155,000 members, it is th ...
(CAMRA) in 1973 for "beer brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous carbon dioxide". It is applied to
bottle conditioned Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brew ...
and
cask conditioned Real ale is the name coined by the Campaign for Real Ale (CAMRA) for beer that is "brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous car ...
beers.
Pale ale Pale ale is a golden to amber coloured beer style brewed with pale malt. The term first appeared around 1703 for beers made from malts dried with high-carbon coke, which resulted in a lighter colour than other beers popular at that time. Diff ...
is a beer which uses a top-fermenting yeast and predominantly pale malt. It is one of the world's major beer styles.
Stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
and porter are dark beers made using roasted malts or roast barley, and typically brewed with slow fermenting yeast. There are a number of variations including Baltic porter, dry stout, and Imperial stout. The name "porter" was first used in 1721 to describe a dark brown beer popular with the street and river
porters Porters may refer to: * Porters, Virginia, an unincorporated community in Virginia, United States * Porters, Wisconsin, an unincorporated community in Wisconsin, United States * Porters Ski Area, a ski resort in New Zealand * ''Porters'' (TV ser ...
of London. This same beer later also became known as stout, though the word stout had been used as early as 1677. The history and development of stout and porter are intertwined.
Mild ale Mild ale is a type of ale. Modern milds are mostly dark-coloured, with an alcohol by volume (ABV) of 3% to 3.6%, although there are lighter-hued as well as stronger milds, reaching 6% abv and higher. Mild originated in Britain in the 17th century ...
has a predominantly malty palate. It is usually dark coloured with an
abv Alcohol by volume (abbreviated as ABV, abv, or alc/vol) is a standard measure of how much alcohol (ethanol) is contained in a given volume of an alcoholic beverage (expressed as a volume percent). It is defined as the number of millilitres (mL) o ...
of 3% to 3.6%, although there are lighter hued milds as well as stronger examples reaching 6% abv and higher.
Wheat beer Wheat beer is a top-fermented beer which is brewed with a large proportion of wheat relative to the amount of malted barley. The two main varieties are German ''Weizenbier'' and Belgian ''witbier''; other types include Lambic (made with wild ye ...
is brewed with a large proportion of wheat although it often also contains a significant proportion of
malted barley Malt is germinated cereal grain that has been dried in a process known as "malting". The grain is made to germinate by soaking in water and is then halted from germinating further by drying with hot air. Malted grain is used to make beer, whis ...
. Wheat beers are usually
top-fermented Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brewer ...
.Eric Warner, ''German Wheat Beer''. Boulder, CO: Brewers Publications, 1992. . The flavour of wheat beers varies considerably, depending upon the specific style.
Lambic Lambic () is a type of beer brewed in the Pajottenland region of Belgium southwest of Brussels and in Brussels itself since the 13th century. Types of lambic beers include gueuze, kriek lambic and framboise. Lambic differs from most other beers ...
, a beer of
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
, is naturally fermented using wild yeasts, rather than cultivated. Many of these are not strains of brewer's yeast (''Saccharomyces cerevisiae'') and may have significant differences in aroma and sourness. Yeast varieties such as ''
Brettanomyces bruxellensis ''Brettanomyces bruxellensis'' (the anamorph of ''Dekkera bruxellensis'') is a yeast associated with the Zenne, Senne valley near Brussels, Belgium. Despite its Latin species name, ''B. bruxellensis'' is found all over the globe. In the wild, it ...
'' and '' Brettanomyces lambicus'' are common in lambics. In addition, other organisms such as ''
Lactobacillus ''Lactobacillus'' is a genus of Gram-positive, aerotolerant anaerobes or microaerophilic, rod-shaped, non-spore-forming bacteria. Until 2020, the genus ''Lactobacillus'' comprised over 260 phylogenetically, ecologically, and metabolically diver ...
'' bacteria produce acids which contribute to the sourness.
Lager Lager () is beer which has been brewed and conditioned at low temperature. Lagers can be pale, amber, or dark. Pale lager is the most widely consumed and commercially available style of beer. The term "lager" comes from the German for "storage" ...
is cool fermented beer.
Pale lager Pale lager is a very pale-to-golden-colored lager beer with a well- attenuated body and a varying degree of noble hop bitterness. The brewing process for this beer developed in the mid-19th century, when Gabriel Sedlmayr took pale ale brewing ...
s are the most commonly consumed beers in the world. Many are of the “
pilsner Pilsner (also pilsener or simply pils) is a type of pale lager. It takes its name from the Bohemian city of Plzeň (german: Pilsen), where the world's first pale lager (now known as Pilsner Urquell) was produced in 1842 by Pilsner Urquell Brewe ...
” type. The name "lager" comes from the German "lagern" for "to store", as brewers around Bavaria stored beer in cool cellars and caves during the warm summer months. These brewers noticed that the beers continued to ferment, and to also clear of sediment, when stored in cool conditions. Lager yeast is a cool bottom-fermenting yeast (''
Saccharomyces pastorianus ''Saccharomyces pastorianus'' is a yeast used industrially for the production of lager beer, and was named in honour of Louis Pasteur by the German Max Reess in 1870. This yeast's complicated genome appears to be the result of hybridisation bet ...
'') and typically undergoes primary fermentation at (the fermentation phase), and then is given a long secondary fermentation at (the lagering phase). During the secondary stage, the lager clears and mellows. The cooler conditions also inhibit the natural production of
ester In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides ar ...
s and other byproducts, resulting in a "cleaner"-tasting beer. With improved modern yeast strains, most lager breweries use only short periods of cold storage, typically 1–3 weeks.


Measurement

Beer is measured and assessed by colour, by strength and by bitterness. The perceived bitterness is measured by the International Bitterness Units scale (IBU), defined in co-operation between the
American Society of Brewing Chemists The American Society of Brewing Chemists (ASBC) is a professional organization of scientists and technical professionals in the brewing, malting, and allied industries. It publishes an journal A journal, from the Old French ''journal'' (meaning ...
and the
European Brewery Convention The European Brewery Convention (EBC) is an organisation representing the technical and scientific interests of the brewing sector in Europe. The EBC defines itself as the scientific and technological arm of The Brewers of Europe. Among brewers, ...
. The international scale was a development of the European Bitterness Units scale, often abbreviated as EBU, and the bitterness values should be identical.


Colour

Beer colour is determined by the malt. The most common colour is a pale amber produced from using pale malts. ''Pale lager'' and ''pale ale'' are terms used for beers made from malt dried with the fuel coke. Coke was first used for roasting malt in 1642, but it was not until around 1703 that the term ''pale ale'' was used. In terms of sales volume, most of today's beer is based on the pale lager brewed in 1842 in the town of Pilsen in the present-day
Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
. The modern pale lager is light in colour with a noticeable carbonation (fizzy bubbles) and a typical
alcohol by volume Alcohol by volume (abbreviated as ABV, abv, or alc/vol) is a standard measure of how much alcohol (ethanol) is contained in a given volume of an alcoholic beverage (expressed as a volume percent). It is defined as the number of millilitres (mL) o ...
content of around 5%. The
Pilsner Urquell Pilsner Urquell (; cs, Plzeňský prazdroj ) is a lager beer brewed by the Pilsner Urquell Brewery in Plzeň (German name: Pilsen), Czech Republic. Pilsner Urquell was the world's first pale lager, and its popularity meant it was much copied, ...
,
Bitburger Bitburger Brewery (Bitburger Brauerei Th. Simon GmbH) is a large Germany, German brewery headquartered in Bitburg, Rhineland-Palatinate. Founded in 1817 by Johann Wallenborn, its beer is the Beer in Germany#Brands and breweries, third best-selli ...
, and
Heineken Heineken Lager Beer ( nl, Heineken Pilsener), or simply Heineken () is a pale lager beer with 5% alcohol by volume produced by the Dutch brewing company Heineken N.V. Heineken beer is sold in a green bottle with a red star. History On 15 Febr ...
brands of beer are typical examples of pale lager, as are the American brands
Budweiser Budweiser () is an American-style pale lager, part of AB InBev. Introduced in 1876 by Carl Conrad & Co. of St. Louis, Missouri, Budweiser has become a large selling beer company in the United States. ''Budweiser'' may also refer to an unrelat ...
, Coors, and
Miller A miller is a person who operates a Gristmill, mill, a machine to grind a grain (for example corn or wheat) to make flour. Mill (grinding), Milling is among the oldest of human occupations. "Miller", "Milne" and other variants are common surname ...
. Dark beers are usually brewed from a pale malt or lager malt base with a small proportion of darker malt added to achieve the desired shade. Other colourants—such as caramel—are also widely used to darken beers. Very dark beers, such as
stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
, use dark or patent malts that have been roasted longer. Some have roasted unmalted barley.


Strength

Beer ranges from less than 3%
alcohol by volume Alcohol by volume (abbreviated as ABV, abv, or alc/vol) is a standard measure of how much alcohol (ethanol) is contained in a given volume of an alcoholic beverage (expressed as a volume percent). It is defined as the number of millilitres (mL) o ...
(abv) to around 14% abv, though this strength can be increased to around 20% by re-pitching with champagne yeast, and to 55% abv by the freeze-distilling process. The alcohol content of beer varies by local practice or beer style. The
pale lager Pale lager is a very pale-to-golden-colored lager beer with a well- attenuated body and a varying degree of noble hop bitterness. The brewing process for this beer developed in the mid-19th century, when Gabriel Sedlmayr took pale ale brewing ...
s that most consumers are familiar with fall in the range of 4–6%, with a typical abv of 5%. The customary strength of British ales is quite low, with many session beers being around 4% abv. In Belgium, some beers, such as table beer are of such low alcohol content (1%–4%) that they are served instead of
soft drink A soft drink (see § Terminology for other names) is a drink that usually contains water (often carbonated), a sweetener, and a natural and/or artificial flavoring. The sweetener may be a sugar, high-fructose corn syrup, fruit juice, a su ...
s in some schools. The weakest beers are dealcoholized beers, which typically have less than 0.05% alcohol (also called "near beer") and
light beer Light beer is a beer, usually a pale lager, that is reduced in alcohol content or in calories compared to regular beers. The first use of the term in marketing was in the 1940s when the Coors Brewing Company sold Coors Light, for a short period ...
s, which usually have 4% alcohol. The alcohol in beer comes primarily from the metabolism of sugars that are produced during fermentation. The quantity of fermentable sugars in the wort and the variety of yeast used to ferment the wort are the primary factors that determine the amount of alcohol in the final beer. Additional fermentable sugars are sometimes added to increase alcohol content, and enzymes are often added to the wort for certain styles of beer (primarily "light" beers) to convert more complex carbohydrates (starches) to fermentable sugars. Alcohol is a by-product of yeast metabolism and is toxic to the yeast in higher concentrations; typical brewing yeast cannot survive at alcohol concentrations above 12% by volume. Low temperatures and too little fermentation time decreases the effectiveness of yeasts and consequently decreases the alcohol content. The strength of beers has climbed during the later years of the 20th century. Vetter 33, a 10.5% abv (33 degrees Plato, hence Vetter "33")
doppelbock Bock is a strong beer in Germany, usually a dark lager. Several substyles exist, including: *Doppelbock (''Double Bock''), a stronger and maltier version *Eisbock (''Ice Bock''), a much stronger version made by partially freezing the beer and ...
, was listed in the 1994 ''
Guinness Book of World Records ''Guinness World Records'', known from its inception in 1955 until 1999 as ''The Guinness Book of Records'' and in previous United States editions as ''The Guinness Book of World Records'', is a reference book published annually, listing world ...
'' as the strongest beer at that time, though Samichlaus, by the Swiss brewer Hürlimann, had also been listed by the ''Guinness Book of World Records'' as the strongest at 14% abv. Since then, some brewers have used champagne yeasts to increase the alcohol content of their beers.
Samuel Adams Samuel Adams ( – October 2, 1803) was an American statesman, political philosopher, and a Founding Father of the United States. He was a politician in colonial Massachusetts, a leader of the movement that became the American Revolution, and ...
reached 20% abv with ''Millennium'', and then surpassed that amount to 25.6% abv with
Utopias A utopia ( ) typically describes an imaginary community or society that possesses highly desirable or nearly perfect qualities for its members. It was coined by Sir Thomas More for his 1516 book ''Utopia'', describing a fictional island society ...
. The strongest beer brewed in Britain was Baz's Super Brew by Parish Brewery, a 23% abv beer. In September 2011, the Scottish brewery BrewDog produced Ghost Deer, which, at 28%, they claim to be the world's strongest beer produced by fermentation alone. The product claimed to be the strongest beer made is Schorschbräu's 2011 ''Schorschbock 57'' with 57,5%. It was preceded by ''The End of History'', a 55% Belgian ale, made by BrewDog in 2010. The same company had previously made ''Sink The Bismarck!'', a 41% abv
IPA IPA commonly refers to: * India pale ale, a style of beer * International Phonetic Alphabet, a system of phonetic notation * Isopropyl alcohol, a chemical compound IPA may also refer to: Organizations International * Insolvency Practitioners ...
, and ''Tactical Nuclear Penguin'', a 32% abv
Imperial stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
. Each of these beers are made using the eisbock method of
fractional freezing Fractional freezing is a process used in process engineering and chemistry to separate substances with different melting points. It can be done by partial melting of a solid, for example in zone refining of silicon or metals, or by partial crys ...
, in which a strong ale is partially frozen and the ice is repeatedly removed, until the desired strength is reached, a process that may class the product as
spirits Spirit or spirits may refer to: Liquor and other volatile liquids * Spirits, a.k.a. liquor, distilled alcoholic drinks * Spirit or tincture, an extract of plant or animal material dissolved in ethanol * Volatile (especially flammable) liquids, ...
rather than beer. The German brewery Schorschbräu's ''Schorschbock'', a 31% abv eisbock, and
Hair of the Dog "Hair of the dog", short for "hair of the dog that bit you", is a colloquial expression in the English language predominantly used to refer to alcohol that is consumed with the aim of lessening the effects of a hangover. Many other languages hav ...
's ''Dave'', a 29% abv
barley wine Barley wine is a strong ale between 6–12% alcohol by volume."Barley wine"
blend of beer with whiskey was jokingly claimed as the strongest beer by a Dutch brewery in July 2010.


Serving


Draught

Draught (also spelled "draft") beer from a pressurised
keg A keg is a small barrel. Wooden kegs made by a cooper were used to transport nails, gunpowder, and a variety of liquids. A keg is normally now constructed of stainless steel, although aluminium can be used if it is coated with plastic on th ...
using a lever-style dispenser and a spout is the most common method of dispensing in bars around the world. A metal keg is pressurised with
carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
(CO2) gas which drives the beer to the dispensing tap or faucet. Some beers may be served with a nitrogen/carbon dioxide mixture.
Nitrogen Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at se ...
produces fine bubbles, resulting in a dense
head A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may ...
and a creamy
mouthfeel Mouthfeel refers to the physical sensations in the mouth caused by food or drink, making it distinct from taste. It is a fundamental sensory attribute which, along with taste and smell, determines the overall flavor of a food item. Mouthfeel is ...
. Some types of beer can also be found in smaller, disposable kegs called beer balls. In traditional pubs, the pull levers for major beer brands may include the beer's logo and trademark. In the 1980s, Guinness introduced the beer widget, a nitrogen-pressurised ball inside a can which creates a dense, tight head, similar to beer served from a nitrogen system. The words ''draft'' and ''draught'' can be used as marketing terms to describe canned or bottled beers containing a beer widget, or which are cold-filtered rather than pasteurised. Cask-conditioned ales (or cask ales) are unfiltered and unpasteurised beers. These beers are termed "
real ale Real ale is the name coined by the Campaign for Real Ale (CAMRA) for beer that is "brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous car ...
" by the
CAMRA The Campaign for Real Ale (CAMRA) is an independent voluntary consumer organisation headquartered in St Albans, England, which promotes real ale, cider and perry and traditional British pubs and clubs. With just under 155,000 members, it is the ...
organisation. Typically, when a cask arrives in a pub, it is placed horizontally on a frame called a "
stillage A stillage is like a pallet or skid, but with a cage or sides, or some form of support specifically tailored to the material it is intended to carry. Some are designed to be stackable. Stillages are mainly used to transport goods, raise products o ...
" which is designed to hold it steady and at the right angle, and then allowed to cool to cellar temperature (typically between ), before being tapped and vented—a tap is driven through a (usually rubber) bung at the bottom of one end, and a hard spile or other implement is used to open a hole in the side of the cask, which is now uppermost. The act of stillaging and then venting a beer in this manner typically disturbs all the sediment, so it must be left for a suitable period to "drop" (clear) again, as well as to fully condition—this period can take anywhere from several hours to several days. At this point the beer is ready to sell, either being pulled through a beer line with a hand pump, or simply being "gravity-fed" directly into the glass. Draught beer's environmental impact can be 68% lower than bottled beer due to packaging differences. A life cycle study of one beer brand, including grain production, brewing, bottling, distribution and waste management, shows that the CO2 emissions from a 6-pack of micro-brew beer is about 3 kilograms (6.6 pounds). The loss of natural habitat potential from the 6-pack of micro-brew beer is estimated to be 2.5 square metres (26 square feet). Downstream emissions from distribution, retail, storage and disposal of waste can be over 45% of a bottled micro-brew beer's CO2 emissions. Where legal, the use of a refillable jug, reusable bottle or other reusable containers to transport draught beer from a store or a bar, rather than buying pre-bottled beer, can reduce the environmental impact of beer consumption.


Packaging

Most beers are cleared of yeast by
filtering Filter, filtering or filters may refer to: Science and technology Computing * Filter (higher-order function), in functional programming * Filter (software), a computer program to process a data stream * Filter (video), a software component tha ...
when packaged in bottles and cans. However,
bottle conditioned Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley) in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brew ...
beers retain some yeast—either by being unfiltered, or by being filtered and then reseeded with fresh yeast. It is usually recommended that the beer be poured slowly, leaving any yeast sediment at the bottom of the bottle. However, some drinkers prefer to pour in the yeast; this practice is customary with
wheat beer Wheat beer is a top-fermented beer which is brewed with a large proportion of wheat relative to the amount of malted barley. The two main varieties are German ''Weizenbier'' and Belgian ''witbier''; other types include Lambic (made with wild ye ...
s. Typically, when serving a hefeweizen wheat beer, 90% of the contents are poured, and the remainder is swirled to suspend the sediment before pouring it into the glass. Alternatively, the bottle may be inverted prior to opening. Glass bottles are always used for bottle conditioned beers. Many beers are sold in cans, though there is considerable variation in the proportion between different countries. In Sweden in 2001, 63.9% of beer was sold in cans. People either drink from the can or pour the beer into a glass. A technology developed by
Crown Holdings Crown Holdings, Inc., formerly Crown Cork & Seal Company, is an American company that makes metal beverage and food cans, metal aerosol containers, metal closures and specialty packing. Founded in 1892, it is headquartered in Yardley, Pennsylvan ...
for the 2010
FIFA World Cup The FIFA World Cup, often simply called the World Cup, is an international association football competition contested by the senior men's national teams of the members of the ' ( FIFA), the sport's global governing body. The tournament ha ...
is the 'full aperture' can, so named because the entire lid is removed during the opening process, turning the can into a drinking cup. Cans protect the beer from light (thereby preventing "skunked" beer) and have a seal less prone to leaking over time than bottles. Cans were initially viewed as a technological breakthrough for maintaining the quality of a beer, then became commonly associated with less expensive, mass-produced beers, even though the quality of storage in cans is much like bottles. Plastic (
PET A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive appearances, intelligence, ...
) bottles are used by some breweries.


Temperature

The temperature of a beer has an influence on a drinker's experience; warmer temperatures reveal the range of flavours in a beer but cooler temperatures are more refreshing. Most drinkers prefer
pale lager Pale lager is a very pale-to-golden-colored lager beer with a well- attenuated body and a varying degree of noble hop bitterness. The brewing process for this beer developed in the mid-19th century, when Gabriel Sedlmayr took pale ale brewing ...
to be served chilled, a low- or medium-strength
pale ale Pale ale is a golden to amber coloured beer style brewed with pale malt. The term first appeared around 1703 for beers made from malts dried with high-carbon coke, which resulted in a lighter colour than other beers popular at that time. Diff ...
to be served cool, while a strong
barley wine Barley wine is a strong ale between 6–12% alcohol by volume."Barley wine"
imperial stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
to be served at room temperature. Beer writer
Michael Jackson Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Dubbed the "King of Pop", he is regarded as one of the most significant cultural figures of the 20th century. Over a ...
proposed a five-level scale for serving temperatures: well chilled () for "light" beers (pale lagers); chilled () for
Berliner Weisse Berliner Weisse (German: Berliner Weiße, ) is a cloudy, sour beer of around 5% alcohol by volume. It is a regional variation of the wheat beer style from Northern Germany, dating back to at least the 16th century. It can be made from combination ...
and other wheat beers; lightly chilled () for all dark lagers,
altbier Altbier (German: ''old beer'') is a style of beer brewed in the Rhineland, especially around the city of Düsseldorf, Germany. It is a copper coloured beer whose name comes from it being top-fermented, an older method than the bottom ferme ...
and German wheat beers; cellar temperature () for regular British
ale Ale is a Type of beer, type of beer brewed using a Warm fermentation, warm fermentation method, resulting in a sweet, full-bodied and fruity taste. Historically, the term referred to a drink brewed without hops. As with most beers, ale typicall ...
,
stout Stout is a dark, top-fermented beer with a number of variations, including dry stout, oatmeal stout, milk stout, and imperial stout. The first known use of the word ''stout'' for beer, in a document dated 1677 found in the Egerton Manuscript ...
and most Belgian specialities; and room temperature () for strong dark ales (especially
trappist beer Trappist beer is brewed by Trappist monks. Thirteen Trappist monasteries—six in Belgium, two in the Netherlands, and one each in Austria, Italy, England, France, and Spain—currently produce beer, but the ''Authentic Trappist Product'' label ...
) and
barley wine Barley wine is a strong ale between 6–12% alcohol by volume."Barley wine"
refrigeration The term refrigeration refers to the process of removing heat from an enclosed space or substance for the purpose of lowering the temperature.International Dictionary of Refrigeration, http://dictionary.iifiir.org/search.phpASHRAE Terminology, ht ...
and by the 1870s, was spread in those countries that concentrated on brewing pale lager. Chilling beer makes it more refreshing, though below 15.5 °C (60 °F) the chilling starts to reduce taste awareness and reduces it significantly below . Beer served unchilled—either cool or at room temperature—reveal more of their flavours.
Cask Marque Real ale is the name coined by the Campaign for Real Ale (CAMRA) for beer that is "brewed from traditional ingredients, matured by secondary fermentation in the container from which it is dispensed, and served without the use of extraneous car ...
, a non-profit UK beer organisation, has set a temperature standard range of 12°–14 °C (53°–57 °F) for cask ales to be served.


Vessels

Beer is consumed out of a variety of vessels, such as a glass, a
beer stein A beer stein ( ), or simply stein, is either a traditional beer mug made out of stoneware or specifically an ornamental beer mug sold as a souvenir or collectible. An 1894 article on beer mugs in the American ''Vogue'' magazine that describes ...
, a mug, a
pewter Pewter () is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. Copper and antimony (and in antiquity lead) act as hardeners, but lead may be used in lower grades of ...
tankard A tankard is a form of drinkware consisting of a large, roughly cylindrical, drinking cup with a single handle. Tankards are usually made of silver or pewter, but can be made of other materials, for example wood, ceramic, or leather. A tankard ...
, a beer bottle or a can; or at
music festival A music festival is a community event with performances of singing and instrument playing that is often presented with a theme such as musical genre (e.g., rock, blues, folk, jazz, classical music), nationality, locality of musicians, or h ...
s and some bars and nightclubs, from a plastic cup. The shape of the glass from which beer is consumed can influence the perception of the beer and can define and accent the character of the style. Breweries offer branded glassware intended only for their own beers as a marketing promotion, as this increases sales of their product. The pouring process has an influence on a beer's presentation. The rate of flow from the tap or other serving vessel, tilt of the glass, and position of the pour (in the centre or down the side) into the glass all influence the result, such as the size and longevity of the head, lacing (the pattern left by the head as it moves down the glass as the beer is drunk), and the release of
carbonation Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid. In chemistry, the term is sometimes used in place of carboxylation, which refers to the formation of carboxylic acids. In inorganic ch ...
. A
beer tower Beer is one of the oldest and the most widely consumed type of alcoholic drink in the world, and the third most popular drink overall after water and tea. It is produced by the brewing and fermentation of starches, mainly derived from ce ...
is a beer dispensing device, usually found in bars and pubs, that consists of a cylinder attached to a beer cooling device at the bottom. Beer is dispensed from the beer tower into a drinking vessel.


Health effects

A 2016 systematic review and meta-analysis found that moderate ethanol consumption brought no mortality benefit compared with lifetime abstention from ethanol consumption. Some studies have concluded that drinking small quantities of alcohol (less than one drink in women and two in men, per day) is associated with a ''decreased'' risk of
heart disease Cardiovascular disease (CVD) is a class of diseases that involve the heart or blood vessels. CVD includes coronary artery diseases (CAD) such as angina and myocardial infarction (commonly known as a heart attack). Other CVDs include stroke, hea ...
,
stroke A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...
,
diabetes mellitus Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level ( hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ap ...
, and early death. Some of these studies combined former ethanol drinkers and lifelong abstainers into a single group of nondrinkers, which hides the health benefits of lifelong abstention from ethanol. The long-term health effects of continuous, moderate or heavy alcohol consumption include the risk of developing
alcoholism Alcoholism is, broadly, any drinking of alcohol (drug), alcohol that results in significant Mental health, mental or physical health problems. Because there is disagreement on the definition of the word ''alcoholism'', it is not a recognize ...
and
alcoholic liver disease Alcoholic liver disease (ALD), also called alcohol-related liver disease (ARLD), is a term that encompasses the liver manifestations of alcohol overconsumption, including fatty liver, alcoholic hepatitis, and chronic hepatitis with liver fibrosis ...
.
Alcoholism Alcoholism is, broadly, any drinking of alcohol (drug), alcohol that results in significant Mental health, mental or physical health problems. Because there is disagreement on the definition of the word ''alcoholism'', it is not a recognize ...
, also known as "alcohol use disorder", is a broad term for any drinking of
alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...
that results in problems. It was previously divided into two types:
alcohol abuse Alcohol abuse encompasses a spectrum of unhealthy alcohol drinking behaviors, ranging from binge drinking to alcohol dependence, in extreme cases resulting in health problems for individuals and large scale social problems such as alcohol-relat ...
and
alcohol dependence Alcohol dependence is a previous (DSM-IV and ICD-10) psychiatric diagnosis in which an individual is physically or psychologically dependent upon alcohol (also chemically known as ethanol). In 2013, it was reclassified as alcohol use disorde ...
. In a medical context, alcoholism is said to exist when two or more of the following conditions is present: a person drinks large amounts over a long time period, has difficulty cutting down, acquiring and drinking alcohol takes up a great deal of time, alcohol is strongly desired, usage results in not fulfilling responsibilities, usage results in social problems, usage results in health problems, usage results in risky situations,
withdrawal Withdrawal means "an act of taking out" and may refer to: * Anchoresis (withdrawal from the world for religious or ethical reasons) * ''Coitus interruptus'' (the withdrawal method) * Drug withdrawal * Social withdrawal * Taking of money from a ban ...
occurs when stopping, and
alcohol tolerance Alcohol tolerance refers to the bodily responses to the functional effects of ethanol in alcoholic beverages. This includes direct tolerance, speed of recovery from insobriety and resistance to the development of alcohol use disorder. Consumption ...
has occurred with use. Alcoholism reduces a person's life expectancy by around ten years and alcohol use is the third leading cause of early death in the United States. No professional medical association recommends that people who are nondrinkers should start drinking alcoholic beverages. A total of 3.3 million deaths (5.9% of all deaths) are believed to be due to alcohol. It is considered that overeating and lack of muscle tone is the main cause of a
beer belly Abdominal obesity, also known as central obesity and truncal obesity, is a condition when excessive visceral fat around the stomach and abdomen has built up to the extent that it is likely to have a negative impact on health. Abdominal obesity has ...
, rather than beer consumption. A 2004 study, however, found a link between
binge drinking Binge drinking, or heavy episodic drinking, is drinking alcoholic beverages with an intention of becoming intoxicated by heavy consumption of alcohol over a short period of time, but definitions ( see below) vary considerably. Binge drinking ...
and a beer belly. But with most overconsumption, it is more a problem of improper exercise and overconsumption of carbohydrates than the product itself. Several diet books quote beer as having an undesirably high
glycemic index The glycemic (glycaemic) index (GI; ) is a number from 0 to 100 assigned to a food, with pure glucose arbitrarily given the value of 100, which represents the relative rise in the blood glucose level two hours after consuming that food. The GI of ...
of 110, the same as
maltose } Maltose ( or ), also known as maltobiose or malt sugar, is a disaccharide formed from two units of glucose joined with an α(1→4) bond. In the isomer isomaltose, the two glucose molecules are joined with an α(1→6) bond. Maltose is the two- ...
; however, the maltose in beer undergoes
metabolism Metabolism (, from el, μεταβολή ''metabolē'', "change") is the set of life-sustaining chemical reactions in organisms. The three main functions of metabolism are: the conversion of the energy in food to energy available to run cell ...
by yeast during fermentation so that beer consists mostly of water, hop oils and only trace amounts of sugars, including maltose.


Nutritional information

Beers vary in their nutritional content. The ingredients used to make beer, including the
yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitut ...
, provide a rich source of nutrients; therefore beer may contain nutrients including
magnesium Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic ta ...
,
selenium Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, ...
,
potassium Potassium is the chemical element with the symbol K (from Neo-Latin ''kalium'') and atomic number19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmosphe ...
,
phosphorus Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Ear ...
,
biotin Biotin (or vitamin B7) is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. The name ''biotin'', bor ...
,
chromium Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hardne ...
and
B vitamins B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism and synthesis of red blood cells. Though these vitamins share similar names (B1, B2, B3, etc.), they are chemically distinct compounds that often coexist ...
. Beer is sometimes referred to as "liquid
bread Bread is a staple food prepared from a dough of flour (usually wheat) and water, usually by baking. Throughout recorded history and around the world, it has been an important part of many cultures' diet. It is one of the oldest human-made f ...
", though beer is not a meal in itself.


Society and culture

In many societies, beer is the most popular alcoholic drink. Various social traditions and activities are associated with beer drinking, such as playing cards, darts, or other pub games; attending
beer festival A beer festival is an event at which a variety of beers are available for purchase. There may be a theme, for instance beers from a particular area, or a particular brewing style such as winter ales. Asia * Singapore holds an annual Beer Festiva ...
s; engaging in zythology (the study of beer); visiting a series of pubs in one evening; visiting breweries; beer-oriented tourism; or
rating beer Beer rating is assessing and evaluating beer using a point system. The process is similar to that used in beer judging competitions, such as those organised by the Beer Judge Certification Program (BJCP) in America, though the participants are cons ...
.
Drinking game Drinking games are games which involve the consumption of alcoholic beverages and often enduring the subsequent intoxication resulting from them. Evidence of the existence of drinking games dates back to antiquity. Drinking games have been banned ...
s, such as
beer pong Beer pong, also known as Beirut, is a drinking game in which players throw a ping pong ball across a table with the intent of landing the ball in a cup of beer on the other end. The game typically consists of opposing teams of two or more player ...
, are also popular. A relatively new profession is that of the
beer sommelier A beer sommelier, also called a cicerone, is a trained professional, working in the hospitality and alcoholic beverage industry, who specializes in the service and knowledge of beer, similar to a traditional wine sommelier. The knowledge required ...
, who informs restaurant patrons about beers and food pairings. Beer is considered to be a
social lubricant The term social lubricant is any food, beverage, drug or activity that stimulates social interactions or helps people feel more comfortable in social occasions. Different cultures use different social lubricants for this purpose. Some common social ...
in many societies and is consumed in countries all over the world. There are breweries in Middle Eastern countries such as
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
, and in some
African countries This is a list of sovereign states and dependent territories in Africa. It includes both fully recognised states, states with limited or zero recognition, and dependent territories of both African and non-African states. It lists 56 sovereign state ...
. Sales of beer are four times those of wine, which is the second most popular alcoholic drink. A study published in the ''Neuropsychopharmacology'' journal in 2013 revealed the finding that the flavour of beer alone could provoke
dopamine Dopamine (DA, a contraction of 3,4-dihydroxyphenethylamine) is a neuromodulatory molecule that plays several important roles in cells. It is an organic compound, organic chemical of the catecholamine and phenethylamine families. Dopamine const ...
activity in the brain of the male participants, who wanted to drink more as a result. The 49 men in the study were subject to
positron emission tomography Positron emission tomography (PET) is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in Metabolism, metabolic processes, and in other physiological activities including bl ...
scans, while a computer-controlled device sprayed minute amounts of beer, water and a
sports drink Sports drinks, also known as electrolyte drinks, are functional beverages whose stated purpose is to help Sportsperson, athletes replace water, electrolytes, and energy before, during and especially after training or competition. There are many ...
onto their tongues. Compared with the taste of the sports drink, the taste of beer significantly increased the participants desire to drink. Test results indicated that the flavour of the beer triggered a
dopamine Dopamine (DA, a contraction of 3,4-dihydroxyphenethylamine) is a neuromodulatory molecule that plays several important roles in cells. It is an organic compound, organic chemical of the catecholamine and phenethylamine families. Dopamine const ...
release, even though alcohol content in the spray was insufficient for the purpose of becoming intoxicated. Some breweries have developed beers to pair with food. Wine writer
Malcolm Gluck Malcolm Gluck is a British author, broadcaster and wine columnist. Career Initially an advertising copywriter for Collett Dickenson Pearce, Doyle Dane Bernbach, a founder employee of Abbott Mead Vickers BBDO and later creative director for Lin ...
disputed the need to pair beer with food, while beer writers
Roger Protz Roger is a given name, usually masculine, and a surname. The given name is derived from the Old French personal names ' and '. These names are of Germanic origin, derived from the elements ', ''χrōþi'' ("fame", "renown", "honour") and ', ' ( ...
and Melissa Cole contested that claim.


Related drinks

Around the world, there are many traditional and ancient starch-based drinks classed as beer. In Africa, there are various ethnic beers made from
sorghum ''Sorghum'' () is a genus of about 25 species of flowering plants in the grass family (Poaceae). Some of these species are grown as cereals for human consumption and some in pastures for animals. One species is grown for grain, while many othe ...
or
millet Millets () are a highly varied group of small-seeded grasses, widely grown around the world as cereal crops or grains for fodder and human food. Most species generally referred to as millets belong to the tribe Paniceae, but some millets al ...
, such as
Oshikundu Oshikundu or Ontaku is a traditional Namibian drink made from fermented millet (mahangu) flour, brans and malted sorghum flour mixed with lukewarm water. It is made from cereal. Ontaku has short life span and it has to be consumed within the ...
in Namibia and
Tella ''Tella'' or ''talla'' (Amharic ጠላ; om, farsoo, ti, siwa) is a traditional beer from Ethiopia. It is brewed from various grains, typically teff and sorghum. Depending on region, barley, wheat, or maize may be used; spices can also be adde ...
in Ethiopia.
Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the east. ...
also has a beer made from millet; it is a low alcohol, somewhat porridge-like drink called "Bozo".
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainous ...
, Nepal,
Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
and
Sikkim Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Siligur ...
also use millet in
Chhaang Chhaang or chhyang (, ne, छ्याङ, new, थो:) is a Nepalese and Tibetan alcoholic beverage also popular in parts of the eastern Himalayas, Yakkha, Limbu, Dura, Newar, Sunuwar, Rai, Gurung, Magar, Sherpa, Tamang and Lepcha comm ...
, a popular semi-fermented rice/millet drink in the eastern
Himalaya The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...
s. Further east in China are found
Huangjiu ''Huangjiu'' (), meaning yellow wine, is a Chinese alcoholic beverage, and is most popular in the Jiangnan area. ''Huangjiu'' is brewed by mixing boiled grains including rice, glutinous rice or millet with qū as starter culture, followed by ...
and
Choujiu ''Choujiu'' is a type of Chinese fermented alcoholic beverage brewed from glutinous rice. It is very thick and has a milky white color, which is sometimes compared to jade. Fermentation is carried out by a combination of the fungus ''Aspergillus ...
—traditional rice-based drinks related to beer. The
Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...
in South America has
Chicha ''Chicha'' is a fermented (alcoholic) or non-fermented beverage of Latin America, emerging from the Andes and Amazonia regions. In both the pre- and post-Spanish conquest periods, corn beer (''chicha de jora'') made from a variety of maize land ...
, made from germinated maize (corn); while the
indigenous peoples in Brazil Indigenous peoples in Brazil ( pt, povos indígenas no Brasil) or Indigenous Brazilians ( pt, indígenas brasileiros, links=no) once comprised an estimated 2000 tribes and nations inhabiting what is now the country of Brazil, before European con ...
have Cauim, a traditional drink made since pre-Columbian times by chewing
manioc ''Manihot esculenta'', commonly called cassava (), manioc, or yuca (among numerous regional names), is a woody shrub of the spurge family, Euphorbiaceae, native to South America. Although a perennial plant, cassava is extensively cultivated a ...
so that an enzyme (
amylase An amylase () is an enzyme that catalyses the hydrolysis of starch (Latin ') into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of ...
) present in human saliva can break down the starch into fermentable sugars; this is similar to Masato in
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
. Some beers which are made from bread, which is linked to the earliest forms of beer, are
Sahti Sahti is a Finnish type of farmhouse ale made from malted and unmalted grains including barley and rye. Traditionally the beer is flavored with juniper in addition to, or instead of, hops;
in Finland,
Kvass Kvass is a fermented cereal-based Alcohol by volume, low alcoholic beverage with a slightly cloudy appearance, light-brown colour and sweet-sour taste. It may be flavoured with berries, fruits, herbs or honey. Kvass stems from the northeastern ...
in Russia and
Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...
, and
Bouza Bouza is a town in southwestern Niger. A town of eight thousand, it is the administrative center of Bouza Department, part of Tahoua Region. Culture and situation Bouza Department is in a largely Hausa-speaking area, which has become in the last ...
in Sudan. 4000 years ago fermented bread was used in Mesopotamia.
Food waste Food loss and waste is food that is not eaten. The causes of food waste or loss are numerous and occur throughout the food system, during production, processing, distribution, retail and food service sales, and consumption. Overall, about o ...
activists got inspired by this ancient recipes and use leftover bread to replace a third of the malted barley that would otherwise be used for brewing their craft ale.


Chemistry

Beer contains the phenolic acids 4-hydroxyphenylacetic acid,
vanillic acid Vanillic acid (4-hydroxy-3-methoxybenzoic acid) is a dihydroxybenzoic acid derivative used as a flavoring agent. It is an oxidized form of vanillin. It is also an intermediate in the production of vanillin from ferulic acid. Occurrence in natu ...
,
caffeic acid Caffeic acid is an organic compound that is classified as a hydroxycinnamic acid. This yellow solid consists of both phenolic and acrylic functional groups. It is found in all plants because it is an intermediate in the biosynthesis of lignin, one ...
,
syringic acid Syringic acid is a naturally occurring phenolic compound and dimethoxybenzene that is commonly found as a plant metabolite. Natural occurrence Syringic acid can be found in several plants including ''Ardisia elliptica'' and '' Schumannianthus d ...
, ''p''-coumaric acid,
ferulic acid Ferulic acid is a hydroxycinnamic acid, an organic compound with the formula (CH3O)HOC6H3CH=CHCO2H. The name is derived from the genus ''Ferula'', referring to the giant fennel (''Ferula communis''). Classified as a phenolic phytochemical, ferulic ...
, and
sinapic acid Sinapinic acid, or sinapic acid (Sinapine - Origin: L. Sinapi, sinapis, mustard, Gr., cf. F. Sinapine.), is a small naturally occurring hydroxycinnamic acid. It is a member of the phenylpropanoid family. It is a commonly used matrix in MALDI mass ...
.
Alkaline hydrolysis Alkaline hydrolysis, in organic chemistry, usually refers to types of nucleophilic substitution reactions in which the attacking nucleophile is a hydroxide ion. Example In the alkaline hydrolysis of esters and amides the hydroxide ion nucleophi ...
experiments show that most of the phenolic acids are present as bound forms and only a small portion can be detected as free compounds.
Hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...
, and beer made with it, contain 8-prenylnaringenin which is a potent
phytoestrogen A phytoestrogen is a plant-derived xenoestrogen (see estrogen) not generated within the endocrine system, but consumed by eating plants or manufactured foods. Also called a "dietary estrogen", it is a diverse group of naturally occurring nonstero ...
. Hop also contains
myrcene Myrcene, or β-myrcene, is a monoterpene. A colorless oil, it occurs widely in essential oils. It is produced mainly semi-synthetically from '' Myrcia'', from which it gets its name. It is an intermediate in the production of several fragrances. ...
,
humulene Humulene, also known as α-humulene or α-caryophyllene, is a naturally occurring monocyclic sesquiterpene (C15H24), containing an 11-membered ring and consisting of 3 isoprene units containing three nonconjugated C=C double bonds, two of them be ...
,
xanthohumol Xanthohumol is a natural product found in the female inflorescences of ''Humulus lupulus'', also known as hops. This compound is also found in beer and belongs to a class of compounds that contribute to the bitterness and flavor of hops. Xanthohum ...
,
isoxanthohumol Isoxanthohumol is a prenylflavonoid, and it is a phytoestrogen. It is abbreviated as IX or IXN. 8-Prenylnaringenin can be produced from isoxanthohumol by flora in the human intestine, and by fungi in cell cultures. This prenylflavonoid is found ...
,
myrcenol Myrcenol is an organic compound, specifically a terpenoid. It is most notable as one of the fragrant components of lavender oil. It is also found in the hop plant (''Humulus lupulus''). E-Myrcenol acts also as a pheromone for bark beetles. Role ...
,
linalool Linalool () refers to two enantiomers of a naturally occurring terpene alcohol found in many flowers and spice plants. Linalool has multiple commercial applications, the majority of which are based on its pleasant scent (floral, with a touch of ...
, tannins, and
resin In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on natu ...
. The alcohol 2M2B is a component of hops brewing. Barley, in the form of malt, brings the condensed
tannin Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term ''tannin'' (from Anglo-Norman ''tanner'', ...
s prodelphinidins B3, B9 and C2 into beer.
Tryptophol Tryptophol is an aromatic alcohol that induces sleep in humans. It is found in wine as a secondary product of ethanol fermentation. It was first described by Felix Ehrlich in 1912. It is also produced by the trypanosomal parasite in sleeping sic ...
,
tyrosol Tyrosol is an organic compound with the formula . Classified as a phenylethanoid, i.e. a derivative of phenethyl alcohol, It is found in a variety of natural sources. The compound is colorless solid. The principal source in the human diet is ol ...
, and phenylethanol are aromatic higher alcohols found in beer as secondary products of
alcoholic fermentation Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products. Because yeasts perform this ...
(products also known as congeners) by ''
Saccharomyces cerevisiae ''Saccharomyces cerevisiae'' () (brewer's yeast or baker's yeast) is a species of yeast (single-celled fungus microorganisms). The species has been instrumental in winemaking, baking, and brewing since ancient times. It is believed to have been o ...
''.


See also

* Beer and breweries by region *
List of barley-based drinks This is a list of barley-based drinks. Barley, a member of the grass family was one of the first domesticated grains in the Fertile Crescent and drinks made from it range from thin herbal teas and beers to thicker drinkable puddings and gruels. ...
*
List of beer cocktails A beer cocktail is a cocktail that is made by mixing beer with other Ingredient, ingredients (such as a distilled beverage) or beer style, another style of beer. In this type of cocktail, the primary ingredient is usually beer. List of beer co ...
*
List of drinks Drinks are liquids that can be consumed. In addition to basic needs, drinks form part of the culture of human society. In a commercial setting, drinks, other than water, may be termed beverages. Alcoholic Alcoholic drink – An alcoholic dr ...
*
List of countries by beer consumption per capita __NOTOC__ This is a list of countries ordered by annual per capita consumption of beer. Information not provided for some countries is not given in the available sources. ''Note: The row number column is fixed. So you can choose what column to ran ...
*
List of national drinks A national drink is a distinct beverage that is strongly associated with a particular country, and can be part of their national identity and self-image. National drinks fall into two categories: alcoholic and non-alcoholic. An alcoholic national ...
* List of food and drink awards


References


Bibliography

* Alexander, Jeffrey W. ''Brewed in Japan: The Evolution of the Japanese Beer Industry'' (University of British Columbia Press; 2013) 316 pages * ''Ale, Beer and Brewsters in England: Women's Work in a Changing World, 1300–1600 '', Judith M. Bennett. * . * ''Beer: The Story of the Pint'', Martyn Cornell. * ''The Book of Beer Knowledge: Essential Wisdom for the Discerning Drinker, a Useful Miscellany'', Jeff Evans. * ''The World Encyclopedia of Beer'', Brian Glover. * ''Beer: An Illustrated History'', Brian Glover. * ''The Beer Book'', Tim Hampson. * ''Beer and Britannia: An Inebriated History of Britain'', Peter Haydon. * ''A History of Beer and Brewing'', I. Hornsey. * ''The World Guide to Beer'',
Michael Jackson Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Dubbed the "King of Pop", he is regarded as one of the most significant cultural figures of the 20th century. Over a ...
. * ''The New World Guide to Beer'', Michael Jackson. *
Archeological Parameters For the Origins of Beer
.'' Thomas W. Kavanagh. * ''Beer in America: The Early Years 1587–1840—Beer's Role in the Settling of America and the Birth of a Nation'', Gregg Smith. * ''Farmhouse Ales: Culture and Craftsmanship in the Belgian Tradition'', Phil Marowski. * ''The Barbarian's Beverage: A History of Beer in Ancient Europe'', Max Nelson. . * ''The Brewmaster's Table'', Garrett Oliver. * ''The Complete Joy of Homebrewing'', Charlie Papazian * * ''Gone for a Burton: Memories from a Great British Heritage'', Bob Ricketts. * ''Country House Brewing in England, 1500–1900'', Pamela Sambrook. * ''Big Book of Beer'', Adrian Tierney-Jones. * ''Bacchus and Civic Order: The Culture of Drink in Early Modern Germany'', Ann Tlusty. *


Further reading

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External links

* * * * {{Authority control Brewing Fermented drinks Alcoholic drinks