普洱

Pu-erh takes its name from the market town of Pu'er in Yunnan province, southwestern China, where caravans converged for centuries before the tea acquired a fixed name. Tang dynasty records from around 850 CE mention Yunnan as a tea-producing region, though the distinctive post-fermented style developed later, under the Song and Yuan dynasties. The process separates pu-erh from every other tea: after oxidation, the leaves are pressed into cakes with microbial cultures, where bacteria and fungi continue working for years or decades. A cake sealed in 1980 is not a relic but a live thing.

The town itself sits at roughly 1,200 metres elevation, a trading hub on the Ancient Tea Horse Road linking Yunnan to Tibet, Burma, and Sichuan. Tibetan buyers prized the compressed cakes because they survived brutal mountain crossings intact, and fermentation continued as caravans climbed. Chinese imperial records from the Ming dynasty (1368–1644) first use the term 普洱茶 to designate this specific regional product. By the Qing dynasty, Yunnan governors were sending pu-erh cakes as tribute to the Beijing court.

The name 普洱 is a Chinese transcription of an older Hani or Blang word for the region; both ethnic groups native to Yunnan cultivated wild tea trees long before Han Chinese traders arrived. The precise original pronunciation is lost, preserved only in the phonetic approximation the Han settlers chose. The town was renamed Simao in 1950 under Mao's administration, then officially renamed Pu'er again in 2007, partly to capitalize on the global market the name had already built. Commerce gave the name back what politics had taken.

In the late 20th century, pu-erh sparked a speculative bubble in Hong Kong and Taiwan. Rare aged cakes sold at auction for thousands of dollars, and counterfeiters produced fake vintage labels in quantity. The market corrected sharply around 2007, but aged pu-erh retained genuine collector demand and high prices for verified old stock. Today the tea is regulated under a Chinese geographical indication, meaning only tea processed in Yunnan from Camellia sinensis var. assamica qualifies legally as pu-erh.