Pu-erh tea grows in China’s Yunnan province. Its history can be traced back to the Han dynasty (206 B.C. – A.D. 220) but it became popular outside China only at the end of 20th century. Pu-erh tea is made from a large-leafed variety of tea. The buds and tender leaves are first converted to raw material called mao-cha (毛茶) by a process involving wilting, kneading, and drying in the sun. The mao-cha is then steamed and pressed into a compressed disk or brick form, then put in storage to allow a natural aging process to “mature” the tea.

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