Puerh is lusciously unique, double fermented black tea. (We like to think of it as black tea and beyond). Although the Chinese have known Puerh’s amazing benefits for centuries, it became a prized discovery among Western tea lovers fairly recently. Only the leaves coming from the province of Yunnan and put under a strictly controlled fermentation process are to be called pu-erh; after spending 5 long years in warm and moist cellars, the tea develops its unique, wine-like taste.