In Germany on christmas you have your roasted goose, duck, turkey or whatever else you are having with pickled red cabbage aka "Rotkraut".
In the UK everyone seems to eat brussel sprouts for christmas...no christmas without sprouts. Ununsual for anyone outside the island but I don't mind it...I like both.
And if you are looking for a small cute kids book that is nonetheless unusual I can recommend this one:
Read the title, walked on, thought about, walked back and bought it :-)