Thanks to Nug, I had the opportunity to sample a few older and thereby quite expensive Menghai TF teas. I no longer sample as often as I used to, and try to be focused on very interesting teas when I do. These teas were sold to us by Taizhong based vendor Wang JF who will sell samples of some of his more expensive teas. The teas were naturally stored in Taiwan, and while I do suspect there were some differences in the storage of these teas early on, I think they all fit easily into the TW-natural storage category.