To obtain the P.G.I., Pu-erh must be elaborated with the assamica variety of Camellia, in the province of Yunnan and with a specific method.
There are two types of Pu-erh, raw and cooked, which once have been processed as such, then are fermented and aged in ideal conditions for a period of time in the highest quality of cooking, it can last until 60 or 70 years, and no more than 3 years for the raw.