Pu-erh tea

„This process was first developed in 1972 by Menghai Tea Factory and Kunming Tea Factory] to imitate the flavor and colour of aged raw pu-erh, and was an adaptation of wet storage techniques being used by merchants to falsify the age of their teas. Mass production of ripened pu'er began in 1975. It can be consumed without further aging, though it can also be stored to "air out" some of the less savoury flavors and aromas acquired during fermentation.“

„There is also knowledge that you can gain from drinking the same tea over and over again that you cannot from sampling. This may involve the tea changing on you – a traditionally stored puerh gradually losing its storage taste, for example. Or, it can just be that you start noticing nuances that were there, but were not necessarily obvious the first few times you try it.“