|"I am bearable only with tea."--Morning|
Lots of people swear by coffee, too (those brave souls). The intent of waking up via caffeine is a cultural icon, and although I know people who drink neither, and some who drink one or both but neither in the morning, what we think of when we hear coffee or tea is "morning palliative."
Of course the tea plant and the coffee bean aren't plausible in every fantasy world. Different fantasy worlds have substitutes, such as the klah in Pern. And tisanes are a staple of many worlds, with hot mint tea or other herbal teas being staples (and also often as medicines). Of course the tea plant seems to be more widely spread across the fantasy universes.
What are your favorite fantasy substitutes for tea or coffee? Have you ever tried a recipe meant to replicate the taste?