Fruitcake is a heavy cake made of dried or candied fruits and nuts that are soaked in brandy or rum, often used in the celebration of weddings and Christmas. The modern fruitcakes are fundamentally butter cakes, with just enough dough to bind the fruit. The cakes are saturated with liqueurs or brandy, and covered in powdered sugar, both of which prevent mold. Brandy or wine-soaked linens are used to store the fruitcakes. Many people feel fruitcakes improve with age. Some cakes have been eaten 25 years after baking.