Sheng is the so-called raw variety of pu erh tea that is considered as the authentic and the original version of this highly-sought tea variety. Pu erh is made in Yunnan, but unlike shou that is artificially fermented, sheng is allowed to naturally age and ferment, often over the course of several years.
The aging process improves the overall characteristics of the tea—making it less astringent and mellow. The production process is simple, and after the tea is withered and sun-dried, it is usually pressed into blocks. It is then stored at a cool and preferably humid place.