Pu-erh tea

„The piling, wetting, and mixing of the piled máochá ensures even fermentation. The bacterial and fungal cultures found in the fermenting piles were found to vary widely from factory to factory throughout Yunnan, consisting of multiple strains of Aspergillus spp., Penicillium spp., yeasts, and a wide range of other microflora. Control over the multiple variables in the ripening process, particularly humidity and the growth of Aspergillus spp., is key in producing ripened pu'er of high quality.“

„Black Puerh Tea was invented by Kunming Tea Factory in 1972/73 and was manufactured in Xia-Guan Tea Factory ever since 1976. It is now manufactured in many different factories and is by far the most popular type of puerh sold.“