Does anyone have any information on "re-steeping" tea leaves? I hear that this is more or less a matter of "experimentation" and that there are no "rules of thumb" per se, but often I'd like to infuse the leaves a second time through the little IngenuiTEA pot. I'm never sure if I should steep them longer the second time, the same amount of time, or if I should throw in just a sprinkle of fresh leaves for the second infusion. Mostly because of cost (and caffeine - I know a second infusion lowers it), I just don't want to waste the wonderful leaves.
I learned that some teas work very well with re-infusion, and that some taste terrible. Does anyone have any advice (either through trial & error or simply good practice) about re-steeping tea leaves?