Kabuse tea, or is a class of Japanese tea leaf. literally means to cover or place on top, as a hat on a head, therefore kabuse tea is a tea leaf harvested from a tea plant that, for some period of time ranging from 2–25 days, has had a porous material draped over the plant while the young leaves are being produced. Kabuse tea is almost exclusively a first flush tea. Though kabuse tea is usually processed into a green tea after picking, kabuse tea denotes a pre-picking process and the freshly picked leaf can be used to produce any kind of tea, from
green tea
Green tea is a type of tea that is made from '' Camellia sinensis'' leaves and buds that have not undergone the same withering and oxidation process which is used to make oolong teas and black teas. Green tea originated in China, and since the ...
to
oolong tea
Oolong (, ; (''wūlóngchá'', "dark dragon" tea)) is a traditional semi-oxidized Chinese tea (''Camellia sinensis)'' produced through a process including withering the plant under strong sun and oxidation before curling and twisting.Zhongguo ...
to
black tea
Black tea, also translated to red tea in various East Asian languages, is a type of tea that is more oxidized than oolong, yellow, white and green teas. Black tea is generally stronger in flavour than other teas. All five types are made from ...
, or other types.
Background
Kabuse tea leaves are used to produce one of the three most expensive Japanese green teas (the others are
gyokuro
is a type of shaded green tea from Japan. It differs from the standard ''sencha'' (a classic unshaded green tea) in being grown under the shade rather than the full sun. The name "gyokuro" translates as "jewel dew" (or "jade dew"). While most s ...
and
matcha
is finely ground powder of specially grown and processed green tea leaves, traditionally consumed in East Asia. The green tea plants used for matcha are shade-grown for three to four weeks before harvest; the stems and veins are removed during ...
). These teas are made from leaves that are hand-plucked and grown in the shade. Shade grown leaves produce superior quality green tea - ''ooika'' is the Japanese term for the "covered aroma" of these teas, which are high in
theanine
Theanine , also known as L-γ-glutamylethylamide and ''N''5-ethyl-L-glutamine, is an amino acid analogue of the proteinogenic amino acids L-glutamate and L-glutamine and is found primarily in particular plant and fungal species. It was disco ...
and other
amino acid
Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha am ...
s that contribute to their distinctive flavor. Kabuse is shaded for a shorter time than ''gyokuro''-it is sometimes called a shade grown ''sencha''. Studies have found considerable difference between the
essential oils
An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants. Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the o ...
of kabuse-cha and
sencha
is a type of Japanese ''ryokucha'' (, green tea) which is prepared by infusing the processed whole tea leaves in hot water. This is as opposed to matcha (), powdered Japanese green tea, where the green tea powder is mixed with hot water and th ...
made from leaves grown in an open field. Kawakami and Yamanishi found that kabuse-cha contained large quantities of
ionone series compounds.
The kabuse tea process was created to mimic the shading effect of the
tanakake tea process used in the cultivation of tencha which is in turn the base for
matcha
is finely ground powder of specially grown and processed green tea leaves, traditionally consumed in East Asia. The green tea plants used for matcha are shade-grown for three to four weeks before harvest; the stems and veins are removed during ...
. The term kabuse tea is used for marketing purposes for an above average quality green tea. The covering process is distressing for the plant and can result in damage or disease if not applied and maintained with proper care.
See also
*
Japanese tea
Green tea is a type of tea that is made from ''Camellia sinensis'' leaves and buds that have not undergone the same withering and oxidation process which is used to make oolong teas and black teas. Green tea originated in China, and since then ...
*
History of tea in Japan
The history of tea in Japan began as early as the 8th century, when the first known references were made in Japanese records. Tea became a drink of the religious classes in Japan when Japanese priests and envoys sent to China to learn about its c ...
References
{{Teas
Japanese words and phrases
Japanese tea