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.“

„Or perhaps you experiment with different parameters, water, ware, etc. and notice that it performs differently under different circumstances. This type of knowledge is not possible if you only have 25g of a tea. It can really only come with drinking 200, 300, or even 1000g of the same tea.“