Tea is the agricultural product of the leaves, leaf buds, and internodes of the Camellia sinensis plant, prepared and cured by various methods. "Tea" also refers to the aromatic beverage prepared from the cured leaves by combination with hot or boiling water, and is the common name for the Camellia sinensis plant itself.
There are at least six varieties of tea: white, yellow, green, oolong, black and pu-erh of which the most commonly found on the market are white, green, oolong, and black. All teas are made from the same species of plant, though different varieties may be used, and the leaves are processed differently, and, in the case of fine white tea, grown differently. Pu-erh Tea, a post-fermented tea, is also often used medicinally.
The term "herbal tea" usually refers to an infusion of leaves, flowers, fruit, herbs, or other plant material that contains no Camellia sinensis. The term "red tea" refers to an infusion made from either black tea (mainly in Chinese, Korean, Japanese and other East Asian Languages) or the South African rooibos plant (containing no Camellia sinensis).
~ thanks to Wikipedia ~
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