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.“

„In some ways, by doing so you’re basically cupping the tea without cupping it – you’re testing whether or not the tea is good for your style of brewing. Even then, however, a good tea drinker should be adjusting to the tea and trying to brew it as best s/he can, which means that the first try can come out horribly wrong.“