what is pu-reh tea
Pu-erh or Pu'er is a variety of aged dark tea produced in Yunnan province, China. Fermentation is a tea production style in which the tea leaves undergo microbial fermentation and oxidation after they are dried and rolled.u-erh undergoes what is known as a solid-state fermentation where water activity is low to negligible. Both endo-oxidation (derived from the tea-leaves enzymes themselves) and microbial catalysed, exo-oxidation of tea polyphenols occurs.