Sheng Puerh

Puerh is unique amongst all the genres of tea because the importance of the raw material far outweighs any processing skill. Green puerh (sheng 生), often called "raw" or "uncooked", is produced without any fermentation (fa xiao) during the production or compression of the cakes. The fermentation of these cakes occurs slowly through an aging process that takes seventy years to reach complete maturity.