Food Unwrapped is dusting off its baubles for a seasonal special in which we bring you the delicious facts about your traditional Christmas foodie favourites. Jimmy Doherty travels to Sri Lanka to find out if there is anything in your yuletide spices which can give you a dose of Christmas cheer. Matt Tebbutt visits Mr Kipling's mega mince pie factory and asks what's the difference between raisins and sultanas, and he discovers how they get the Christmas spirit into boozy chocolates. Helen Lawal investigates whether we should actually be scouring our sprouts. And Kate Quilton wonders whether the traditional Christmas dinner could be a bit of a turkey and considers a more decadent dish from the past - the multi bird roast.