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Green Tea:
An Overview Green
tea is the palest in color, ranging from light green to light
yellow in color. Green tea is not oxidized; the leaves are steamed
or baked immediately after being plucked. They are then rolled
and dried allowing the leaves to remain green in color. Green
tea is made from both new buds as well as young leaves –
“pluckers” take ‘two leaves and a bud’.
Green tea, which is unfermented tea, remains the most popular
tea in Asian countries such as China and Japan. In fact, up
until the eighteenth century, it was also the most popular form
of tea in Britain as well. Imports of green tea into the United
States outpaced black tea until about 1915. Much of the tea
dumped into the Boston harbor during the Boston Tea Party, was
in fact green tea. Thus it is unlikely that the harbor turned
to a copper color!
About ninety percent of the world's green tea is produced in
China. While most of the world's black tea comes from countries
such as Sri Lanka (Ceylon), India, Kenya, Indonesia and Argentina,
these countries produce little, if any, green tea. Several hundred
varieties of green tea are made in China alone. Some of the
most popular include Gunpowder, Hyson, Imperial Green, and Gyokuro
(Japan). A cup of green tea is generally much lighter than other
teas. While Asian cultures have believed for centuries that
green tea has properties beneficial to human health, modern
science is just now discovering that this may be true.
Manufacture
Differences between green, black, and oolong teas occur during
the processing of the tea leaves. Plucking
All types are normally hand plucked. Pluckers take only the
bud and two leaves, as only young leaves produce good quality
tea. Machine plucked tea is usually inferior. Withering
The next step in manufacturing is withering. Tea leaves are
laid out and allowed to wilt for several hours. Leaves are laid
out in bamboo trays or in withering beds indoors. Withering
reduces the moisture content in the leaves and prepares them
for the next step. Withering can be omitted during the production
of green tea, but is crucial in black tea manufacture.
Steaming
This process differentiates green tea from other types. After
withering, green tea leaves are immediately steamed, baked,
or pan heated. This crucial step in green tea manufacture prevents
the oxidation (fermentation) of the leaves so that they remain
green. Rolling
Green tea is very often hand rolled, but mechanical rollers
are used as well.
The rolling process gives the leaves their appearance. During
green tea
manufacture, leaves are usually steamed rolled and steamed alternatively.
Tightly rolled leaves are an indication of good quality tea.
Firing
Green tea leaves are given a final firing to dry the leaves
and ensure
no oxidation of the leaves occurs. The firing of leaves is done
in ovens.
DIFFERENCES IN THE TEA PROCESSING METHOD
Differences in the tea processing method create three
basic tea types - green tea, black tea and oolong tea.
The amount of oxidation, often referred to as
fermentation, that the tea leaves undergo
determines the basic tea type. It is the
oxidation process that produces tea’s
distinctive color and taste characteristics.
All tea comes from the leaves of the Camellia
Sinensis tree. Tea gardens pluck or prune the
Camellia Sinensis year round and the plant more
resembles a bush, but allowed to grow wild, it reaches
heights of about thirty feet. |
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