Just before the Halloween decorations were taken down and packed up, the signs advertising Christmas cakes went up. Bakeries, department stores and convenience stores all seem to have a corner for small cakes topped with whipped cream and tiny Santa Claus figurines. A traditional Japanese holiday feast of KFC and strawberry shortcake might come off as odd to those used to a whole roast turkey and apple pie, but if you're up for joining the local festivities, then make sure your treats will impress.