Green tea Green tea Green tea is a type of tea that is made from "Camellia sinensis" leaves that have not undergone the same withering and oxidation process used to make oolong teas and black teas. Green tea originated in China, but its production and manufacture has spread to many other countries in Asia. Several varieties of green tea exist, which differ substantially based on the variety of "C. sinensis" used, growing conditions, horticultural methods, production processing, and time of harvest. Although there has been considerable research on the possible health effects of consuming green tea regularly, there is little evidence that
White tea White" and "Fujian White". Some tea from the related wild "Camellia taliensis" in Yunnan is made using white tea processing techniques. White tea, like black and green tea, is made from the "Camellia sinensis" plant and contains polyphenols, a set of phytonutrients that are thought to be responsible for the health effects of tea. Different white teas have different amounts of catechins, a category of polyphenols, and the overall range of concentrations overlaps with that of green tea, meaning that some white teas have the same concentration of polyphenols as some green teas. This may be due to the variety