A great recipe for leftover Christmas cake or pudding. I saw this recipe on the Seven Sunrise Show and remember a friend's mum making something like years ago. She would use up her leftover Christmas pudding and cakes during the year to make this, and it tasted very nice indeed. I am not sure if this is the exact same recipe, but it sure looks close to it. I always have leftovers, and never quite sure what to use them in but this year I will freeze the leftover pudding and cake to use later in this recipe. Slice can be made up to 5 days ahead or freeze for up to 2 months. Thaw at room temperature, before serving.