Also called baba au rhum, this rich, light currant- or raisin-studded yeast cake is soaked in a rum or kirsch syrup. It's said to have been invented in the 1600s by Polish King Lesczyinski, who soaked his stale kugelhopf in rum and named the dessert after the storybook hero Ali Baba. The classic baba is baked in a tall, cylindrical mould but the cake can be made in a variety of shapes, including small individual rounds. When the cake is baked in a large ring mould it's known as a savarin.