Pu'er Tea

Pu'er Tea, aged and fermented in Yunnan's mountains, develops an earthy, complex flavor over decades and is traded as an investment asset, with vintage cakes fetching tens of thousands of dollars. A single cake from the 1970s recently sold for $15,000 at auction, driven by a 200% increase in microbial activity over 30 years of aging. This fermentation process also reduces caffeine by 25% compared to unaged teas, appealing to collectors seeking both taste and asset appreciation.