Trouble brewing

Controversy has been raging on the ' What do you want to talk about? ' thread in recent days over the correct way to prepare tea. It's a question that has taxed the great and the good, from George Orwell to Evelyn Waugh . Attempts have been made to apply science to the question , but the argument does not seem to have been settled. So, for Friday teatime, we thought we'd let you thrash it out in an open thread. Milk in first or last? Should the pot be warmed? And what about varieties? Darjeeling or Ceylon? Green or black? Is Rooibos an acceptable caffeine-free alternative or an affront to all right-thinking tea drinkers?