Pu-erh tea

„Pu'er traditionally begins as a raw product known as "rough" Mao Cha (毛茶) and can be sold in this form or pressed into a number of shapes and sold as "raw" Sheng Cha (生茶). Both of these forms then undergo the complex process of gradual fermentation and maturation with time.“

„yun; 韵. Charm, appeal, allure. A difficult term to render into English as it refers to a quality of tea that 'cannot be apprehended by the five senses.' Generally used with hou; 喉 - throat. Hou yun. A pleasant feeling that lingers in the throat after swallowing tea. Distinct from hui-gan. “