<human>:  What do I need to know about the ingredients in an Italian wedding cake?
<bot>: The traditional Italian wedding cake is usually a multi-layered sponge cake that is filled with fruits, nuts, and a creamy custard or mousse. The ingredients typically include flour, butter, sugar, eggs, milk, and other flavorings such as vanilla, liqueurs, or lemon juice. The cake is often decorated with fresh flowers, marzipan, and other decorations. It is usually served with a complimentary glass of champagne or sparkling wine.