Dayi

Dayi is the house brand of Menghai Tea Factory, which was set up in 1940 in Menghai County, Xishuangbanna, in southern Yunnan by a team led by tea scientist Fan Hejun and was first known as the Fohai tea factory. The name translates to "great benefit," and the factory registered it as a trademark in 1989. In 1973 Menghai helped pioneer wet piling, the controlled fermentation method behind modern ripe pu-erh, and its recipe-driven cakes have long served as reference points for pu-erh drinkers.