Pu-erh tea is a special type of dark tea made in Yunnan, China. It is special because it tastes better as it ages – just like wine.
Pu-erh is a microbially fermented tea obtained through the action of molds, bacteria and yeasts on the harvested leaves of the tea plant.
It is thus truly a fermented tea, whereas teas known in the west as black teas (known in China as Red teas) have only undergone large-scale oxidation through naturally occurring tea plant enzymes.
Because of the prolonged fermentation in pu’erh, these teas are often less bitter than other ‘black’ teas.