This is another one of those things that you never would have thought of, and you needed the french to come up with it . . . warm orange juice.
Take one quart of orange juice, and about 3 tablespoons of honey to take out the acidity of the orange juice, heat to just short of a boil, and you've got one killer drink. First time I had it was at a Xmas market where it was cold and sleeting, so it tasted even better - but we later tried it at home, and it still rocked.