Shou Puerh

Black puerh (shou 熟), often called "cooked" or "ripe", is produced through a process that ferments (fa xiao) the tea to varying levels before it is compressed. Shou puerh is all produced by using a process called "wet-pile fermentation (wo dui, 渥堆), this step in puerh production is akin to composting. The tea is piled, moistened and then often covered with a thermal blanket to increase internal heat.