@height8 It's a wonderfully simple and refreshing tea, in the same way as rooibos. You'll have to go looking for it, because it's often considered a waste product, but when you do find it, it'll probably be quite cheap (for the same reason).
It's something I prepare when I'm not really in the mood for more complex, attention-demanding Chinese teas, and want something a tiny bit on the sour side.