Dim sum various mixtures of flowers with green tea, black tea or oolong tea. Flowers used include jasmine, gardenia, magnolia, grapefruit flower, sweet-scented osmanthus and rose. There are strict rules about the proportion of flowers to tea. Jasmine tea is the most popular type of scented tea, and is often the most popular type of tea served at yum cha establishments. The above teas are produced in most of China. Chinese tea bushes ("Camellia sinensis") are cultivated in the mountain areas of tropical and subtropical regions or wherever there is a proper climate, sufficient humidity, adequate sunshine and fertile soil. Chinese tea
Pu'er tea and much higher levels of gallic acid compared with traditionally aged raw pu'er. Additionally, traditionally aged pu'er has higher levels of the antioxidant and carcinogen-trapping epigallocatechin gallate as well as (+)-catechin, (–)-epicatechin, (–)-epigallocatechin, gallocatechin gallate, and epicatechin gallate than wet pile fermented pu'er. Finally, wet pile fermented puer has much lower total levels for all catechins than traditional pu'er and other teas except for black tea which also has low total catechins. To produce pu'er, many additional steps are needed prior to the actual pressing of the tea. First, a specific quantity of dry "máochá" or ripened tea leaves pertaining