I think the situation here might be a bit analogous to organic food – oftentimes, organic food can indeed taste better, not necessarily because it is organic, but also because it is farmed with more care and attention from the farmer, whereas the industrially produced stuff gets relatively less care and comes out not tasting as good. Yet, if all the farms in the world go organic, then a lot of people will starve, because the yield from such farms tend to be lower, with more losses and less production because of the very nature of the farming method. Likewise, winemakers often advertise when they use old vines for a wine, labeling it vieilles vignes for example, to let us know that it is made from old vines, with the implication that this makes better wine. Tea makers are also doing that, most notably with puerh but also increasingly with other types of tea, telling us that this or that is made with old tree teas. But old tree teas don’t produce as much, which, of course, is part of the reason why they are more expensive.
I suspect that this day and age, especially after the ravages of collectivization, there are very few old tree teas left in many of the major tea producing areas in China. What’s left are likely to be destroyed, unless held in private hands, so comparison between the two tend to be difficult, if not impossible. With puerh, I think it is safe to say that there’s a difference between old tree and non-old tree teas. Whether that difference is good or not, however, is really up for debate, as different people have different theories. Old trees, however, command much higher prices, even as raw leaves. It does, then, feed back into the self-fulling loop because if you were a tea processor, and you have a kilo each, one of which costs a lot more to procure, you’re likely to put more care into processing the bag that cost more. This, in turn, may result in better tea simply because you were paying more attention, thus fueling the speculation that old tree teas taste better, thus further driving up the prices. Of course, this is all speculation, but it is nevertheless worth thinking about. After all, Wu and Hu noted that there were quality issues that are distinct from yield issues; it’s too bad that they didn’t say what kind of quality problems there were with such teas.
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