Pu-erh tea

„Nèi piào (内票): A larger description ticket or flyer packaged loose under the wrapper. Both aid in assuring the identity of the cake. It usually indicates factory and brand. As well, many nèi piào contain a summary of the tea factories' history and any additional laudatory statements concerning the tea, from its taste and rarity, to its ability to cure diseases and effect weight loss.“

„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.“