The best tea

I brewed a pitcher of iced tea the other day. I didn't realize how low we were on tea bags. It turns out we only had two left. So I made the tea with just the two bags, and put in a little extra lemon. It was the best tea we had had in a long time. So tonight I want more tea, but haven't made it to the store. So I re-used the two tea bags, again with a whole lemon, and you know what ... even better! What's up with that?