Chinese tea green, oolong, black and post-fermented. Others add categories for scented and compressed teas. All of these come from varieties of the "Camellia sinensis" plant. Most Chinese teas are cultivated and consumed in China, however are also exported internationally due to a rise in the popularity of Chinese cuisine worldwide. It is commonly available in Chinese Restaurants and grocery shops worldwide. Green tea is the most popular type of tea consumed in China. Within these main categories of tea are vast varieties of individual beverages. Some researchers have counted more than 700 of these beverages. Others put the number at more
Camellia sinensis The leaves are long and broad. Fresh leaves contain about 4% caffeine, as well as related compounds including theobromine. The young, light green leaves are preferably harvested for tea production; they have short white hairs on the underside. Older leaves are deeper green. Different leaf ages produce differing tea qualities, since their chemical compositions are different. Usually, the tip (bud) and the first two to three leaves are harvested for processing. This hand picking is repeated every one to two weeks. In 2017 Chinese scientists sequenced the genome of "Camellia sinensis var. assamica ." It contains about three billion base