Hot Chocolate. Though even though I personally don't really like the taste of hot coffee, especially without milk, it is refreshing to drink it slowly when you wake up in the morning.
green tea(picking a favourite more specific than that would be difficult but) but i voted for coffee anyway because when i go to a restaurant and all they have is ""tea"" i get coffee
Hot chocolate and green tea are the only hot drinks I can stand, but even then, I usually wait until they're more lukewarm than anything else - so that I can actually taste something other than burning. I prefer cold drinks, by far.