Shou and sheng are two types of pu-erh that differ in their fermentation method. Sheng (raw, 'green') ferments naturally — over years, while shou (ripe, 'black') undergoes accelerated artificial
Black tea is the most oxidized of all tea types: the leaf is fermented by 80–100%, so the infusion comes out dark and the taste rich and astringent. In the cup