Pu-erh tea is made from the leaves and shoots of the tea plant (Camellia sinensis), the same plant used to make green tea, oolong tea, and black tea. different Green tea is not fermented, oolong tea is slightly fermented, black tea is fully fermented. For Pu-erh tea, it is a tea that is made after fermenting the tea leaves. The Pu’er tea production process is fermented twice and stored in a high humidity environment. Pu-erh tea that has been stored for a long time will have a better taste. Most Pu-erh teas are produced in Yunnan in China. It is also a very popular tea in Taiwan. And this type of tea is also used to make medicine as well.