Zest is a food ingredient that is prepared by scraping or cutting from the rind of unwaxed

citrus fruits ''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is nativ ...

such as

lemon The lemon (''Citrus limon'') is a species of small evergreen trees in the flowering plant family Rutaceae, native to Asia, primarily Northeast India (Assam), Northern Myanmar or China. The tree's ellipsoidal yellow fruit is used for culin ...

orange Orange most often refers to: *Orange (fruit), the fruit of the tree species '' Citrus'' × ''sinensis'' ** Orange blossom, its fragrant flower *Orange (colour), from the color of an orange, occurs between red and yellow in the visible spectrum * ...

citron The citron (''Citrus medica''), historically cedrate, is a large fragrant citrus fruit with a thick rind. It is said to resemble a 'huge, rough lemon'. It is one of the original citrus fruits from which all other citrus types developed throu ...

, and

lime Lime commonly refers to: * Lime (fruit), a green citrus fruit * Lime (material), inorganic materials containing calcium, usually calcium oxide or calcium hydroxide * Lime (color), a color between yellow and green Lime may also refer to: Botany ...

. Zest is used to add flavor to foods. In terms of

fruit anatomy Fruit anatomy is the plant anatomy of the internal structure of fruit. Fruits are the mature ovary or ovaries of one or more flowers. They are found in three main anatomical categories: aggregate fruits, multiple fruits, and simple fruits. Aggr ...

, the zest is obtained from the

flavedo Fruit anatomy is the plant anatomy of the internal structure of fruit. Fruits are the mature ovary or ovaries of one or more flowers. They are found in three main anatomical categories: aggregate fruits, multiple fruits, and simple fruits. Aggr ...

(

exocarp Fruit anatomy is the plant anatomy of the internal structure of fruit. Fruits are the mature ovary or ovaries of one or more flowers. They are found in three main anatomical categories: aggregate fruits, multiple fruits, and simple fruits. Aggr ...

) which is also referred to as zest. The flavedo and white pith (

albedo Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that refl ...

) of a citrus fruit together makes up its peel. The amounts of both flavedo and pith are variable among citrus fruits, and may be adjusted by the manner in which they are prepared. Citrus peel may be used fresh, dried, candied, or pickled in salt. Orange cross section description

Preparation

For culinary use, a

zester A zester (also, citrus zester or lemon zester) is a kitchen utensil for obtaining zest from lemons and other citrus fruit. A kitchen zester is approximately long, with a handle and a curved metal end, the top of which is perforated with a row ...

grater A grater, also known as a shredder, is a kitchen utensil used to grate foods into fine pieces. Uses Food preparation Several types of graters feature different sizes of grating slots, and can therefore aid in the preparation of a variety of ...

, vegetable

peeler A peeler (vegetable scraper) is a kitchen tool, a distinct type of kitchen knife, consisting of a metal blade with a slot with a sharp edge attached to a handle, used to remove the outer layer (the "skin" or "peel") of some vegetables such as ...

paring knife A kitchen knife is any knife that is intended to be used in food preparation. While much of this work can be accomplished with a few general-purpose knives – notably a large chef's knife, a tough cleaver, a small paring knife and some sort of ...

, or even a surform tool is used to scrape or cut zest from the fruit. Alternatively, the peel is sliced, then excess pith (if any) cut away. The white portion of the peel under the zest (

pith Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch. In eudicotyledons, pith is located in the center of the stem. In monocotyledons, it ext ...

, albedo or

mesocarp Fruit anatomy is the plant anatomy of the internal structure of fruit. Fruits are the mature ovary or ovaries of one or more flowers. They are found in three main anatomical categories: aggregate fruits, multiple fruits, and simple fruits. Agg ...

) may be unpleasantly bitter and is generally avoided by limiting the peeling depth. Some citrus fruits have so little white mesocarp that their peel can be used whole. Cinpi2

Variation between fruit

The zest and mesocarp vary with the genetics of the fruit. Fruit with peels that are almost all flavedo are generally mandarines; relatives of

pomelos The pomelo ( ), ''Citrus maxima'', is the largest citrus fruit from the family Rutaceae and the principal ancestor of the grapefruit. It is a natural, non-hybrid, citrus fruit, native to Southeast Asia. Similar in taste to a sweet grapef ...

and

s tend to have thicker mesocarp. The mesocarp of

pomelo The pomelo ( ), ''Citrus maxima'', is the largest citrus fruit from the family Rutaceae and the principal ancestor of the grapefruit. It is a natural, non-hybrid, citrus fruit, native to Southeast Asia. Similar in taste to a sweet grapefr ...

relatives (

grapefruit The grapefruit (''Citrus'' × ''paradisi'') is a subtropical citrus tree known for its relatively large, sour to semi-sweet, somewhat bitter fruit. The interior flesh is segmented and varies in color from pale yellow to dark pink. Grapefruit is ...

, etc.) is generally more bitter; the mesocarp of

relatives ( Mexican and

Persian lime Persian lime (''Citrus'' × ''latifolia''), also known by other common names such as seedless lime, Bearss lime and Tahiti lime, is a citrus fruit species of hybrid origin, known only in cultivation. The Persian lime is a triploid cross betwee ...

alemow ''Citrus macrophylla'', also known as alemow, is a citrus tree and fruit, belonging to the papedas. The trees are short in stature, more tropical in nature than most citrus, and are very spiny. Taxonomy Alemow is rare and poorly studied, a l ...

s etc.) is milder. The

is a hybrid of pummelo, citron, and mandarin. The mesocarp is also edible, and is used to make

succade Succade is the candied peel of any of the citrus species, especially from the citron or ''Citrus medica'' which is distinct with its extra-thick peel; in addition, the taste of the inner rind of the citron is less bitter than those of the other ...

Uses

Zest is often used to add flavor to different pastries and sweets, such as

pie A pie is a baked dish which is usually made of a pastry dough casing that contains a filling of various sweet or savoury ingredients. Sweet pies may be filled with fruit (as in an apple pie), nuts ( pecan pie), brown sugar ( sugar pie), swe ...

s (e.g.,

lemon meringue pie Lemon meringue pie is a dessert pie consisting of a shortened pastry base filled with lemon curd and topped with meringue. History Fruit desserts covered with baked meringue were found beginning in the 18th century in France. Menon's ''pom ...

cakes Cake is a flour confection made from flour, sugar, and other ingredients, and is usually baked. In their oldest forms, cakes were modifications of bread, but cakes now cover a wide range of preparations that can be simple or elaborate, ...

cookie A cookie is a baked or cooked snack or dessert that is typically small, flat and sweet. It usually contains flour, sugar, egg, and some type of oil, fat, or butter. It may include other ingredients such as raisins, oats, chocolate chips, n ...

biscuit A biscuit is a flour-based baked and shaped food product. In most countries biscuits are typically hard, flat, and unleavened. They are usually sweet and may be made with sugar, chocolate, icing, jam, ginger, or cinnamon. They can also be ...

s, puddings,

confectionery Confectionery is the art of making confections, which are food items that are rich in sugar and carbohydrates. Exact definitions are difficult. In general, however, confectionery is divided into two broad and somewhat overlapping categories ...

candy Candy, also called sweets (British English) or lollies (Australian English Australian English (AusE, AusEng, AuE, AuEng, en-AU) is the set of varieties of the English language native to Australia. It is the country's common language an ...

and

chocolate Chocolate is a food made from roasted and ground cacao seed kernels that is available as a liquid, solid, or paste, either on its own or as a flavoring agent in other foods. Cacao has been consumed in some form since at least the Olmec civ ...

. Zest also is added to certain dishes (including

ossobuco alla milanese ''Ossobuco'' or ''osso buco'' (; lmo, òss bus, label=Milanese or ''òs büüs'' ) is a specialty of Lombard cuisine of cross-cut veal shanks braised with vegetables, white wine, and broth. It is often garnished with ''gremolata'' and traditio ...

marmalade Marmalade is a fruit preserve made from the juice and peel of citrus fruits boiled with sugar and water. The well-known version is made from bitter orange. It is also made from lemons, limes, grapefruits, mandarins, sweet oranges, bergamo ...

sauce In cooking, a sauce is a liquid, cream, or semi-solid food, served on or used in preparing other foods. Most sauces are not normally consumed by themselves; they add flavor, moisture, and visual appeal to a dish. ''Sauce'' is a French wor ...

sorbet Sorbet (), also called "water ice", is a frozen dessert made using ice combined with fruit juice, fruit purée, wine, liqueur, honey, etc. Generally sorbets do not contain dairy ingredients, while sherbets do. Etymology The word "sorbet" en ...

s and

salad A salad is a dish consisting of mixed, mostly natural ingredients with at least one raw ingredient. They are typically served at room temperature or chilled, though some can be served warm. Condiments and salad dressings, which exist in a va ...

s. Zest is a key ingredient in a variety of sweet and sour condiments, including

lemon pickle Preserved lemon or lemon pickle is a condiment that is common in the cuisines of Indian subcontinent and Morocco. It's also found in 18th-century English cuisine. It is also known as "country lemon" and ''leems''. Diced, quartered, halved, or ...

, lime

chutney A chutney is a spread in the cuisines of the Indian subcontinent. Chutneys are made in a wide variety of forms, such as a tomato relish, a ground peanut garnish, yogurt or curd, cucumber, spicy coconut, spicy onion or mint dipping sa ...

, and

Lemon liqueur Lemon liqueur is a liqueur made from lemons, liquor, and sugar. It is light to bright lemon yellow in color; intensely lemony in flavor; clear, cloudy, or opaque; and sweet or sweet and sour. Lemon zest is used, water may be added, and the ...

s and

liquor Liquor (or a spirit) is an alcoholic drink produced by distillation of grains, fruits, vegetables, or sugar, that have already gone through alcoholic fermentation. Other terms for liquor include: spirit drink, distilled beverage or hard ...

s such as

Licor de oro Licor de oro (English: ''Gold liqueur'') is a typical Chilotan liqueur made of aguardiente and whey. The other ingredients are saffron Saffron () is a spice derived from the flower of ''Crocus sativus'', commonly known as the "saffron c ...

require zest. Zest is used in some cocktails not only for flavor and aroma but also for color as a garnish. For use as a cocktail garnish, zest often is cut in a long spiral called a

twist Twist may refer to: In arts and entertainment Film, television, and stage * ''Twist'' (2003 film), a 2003 independent film loosely based on Charles Dickens's novel ''Oliver Twist'' * ''Twist'' (2021 film), a 2021 modern rendition of ''Olive ...

. Cocktails featuring a twist include

Dry Martini The martini is a cocktail made with gin and vermouth, and garnished with an olive or a lemon twist. Over the years, the martini has become one of the best-known mixed alcoholic beverages. A popular variation, the vodka martini, uses vodka in ...

and

Horse's Neck A horse's neck is an American cocktail recognised by the IBA, identifiably sporting a long, curling strip of lemon rind. Mixture It is made with brandy (or sometimes bourbon) and ginger ale, with a long spiral of lemon peel draped over the e ...

. For maximum flavor and aroma, as in

mulled wine Mulled wine, also known as spiced wine, is an alcoholic drink usually made with red wine, along with various mulling spices and sometimes raisins, served hot or warm. It is a traditional drink during winter, especially around Christmas. It is us ...

, zest is simply cut from the fruit with a knife.

References

{{citrus Food ingredients Citrus production

Preparation

Variation between fruit

Uses

See also

References