Pu'er tea the "ripe" Shou Chá. All types of pu'er tea are created from "máochá" (毛茶), a mostly unoxidized green tea processed from "Camellia sinensis" var. "assamica", which is the large leaf type of Chinese tea found in the mountains of southern and western Yunnan (in contrast to the small leaf type of tea used for typical green, oolong, black, and yellow teas found in the other parts of China). Maocha can be sold directly to market as loose leaf tea, compressed to produce "raw" "shēngchá", naturally aged and matured for several years before being compressed to also produce "raw" "shēngchá" or
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