I've got a few aged gaoshan.. they're not that uncommon, it's just hard to find aged oolong much at all over here.
As for cheap wulong just tasting like 'dry mouthfeel' -- a lot of wulong goes through an akward 'stale' phase before getting better, but it should still age. Now a crappy wulong won't magically turn into a great one with age, but it can make a fun experiment and it might just turn out to be a drinkable everyday type aged wulong.
The stuff that I have actually isn't bad at all, it's just not terribly complex. It seems to be a highly oxidized low roast tea with some floral aroma. It's a lot better than grocery store type cheap tea, but it's definitely not top quality. I'd say it's on the low end of the mid-range teas; the store I got it from keeps low prices for almost all of their teas. Even their top grade jade Dong Ding is $134/lb, and is better than anymost I've gotten online for twice the price.
shogun89 wrote:Dont have a source on the humidity thought, It just dosent seem like it would be good to take a tea to an artificial humidity.
Ah, the way you stated it as fact made it sound like you had found some data that I didn't know about
I've found (through experimenting) that it depends on the tea. Some like green teas don't do well when they're too dry but I've found that most wulong benefits from it (actually all that I've tried, though some didn't seem affected either way but will probably stay fresh longer). Humidity is going to make it go sour at best and musty at worst. I've actually successfully refreshed stale baozhong with desiccants.
Nigel wrote something about the subject of humidity at one point; maybe someone remembers it and can provide a link. He talks about the balance of humidity being important. I think he said somewhere in the range of 2% is good but at the vendor's place it equalizes with the ambient RH up to 10%. So especially with our favorite vendors in HK, Taiwan, Malaysia, etc., it often equalizes at about 10% before being sealed shut - this makes the tea go stale much faster. So while I wouldn't suggest putting one of the monster desiccants into a tin, I've generally found that 2-4 small packets in a tin (with wulong) often does some good.