I kind of stopped doing it that often, but the usual cups and mugs are too small for me, so I drank te out of a 0,5 l mug. Most of the times, I wouldn't do that in one approach, so I had some cold tea left later.
I don't mean ice tea from a bottle, I mean proper tea I make for myself at home. Nobody counts "lipton green kindatea, 2l" (although it is better than most sodas)