The traditional Greek New Year's cake containing a hidden coin is called vasilopita.
Vasilopita is served on or around New Year's Day in Greece and in Greek communities worldwide. A coin, often called a flouri, is baked into the cake. The person who receives the slice containing it is traditionally considered lucky for the coming year.
The cake is associated with Saint Basil the Great, whose feast day is celebrated on January 1 in the Greek Orthodox tradition. A popular legend says Basil asked residents to return valuables that had been collected from them; the items were baked into loaves, and each person miraculously received the right possession. Historical versions of the story vary.
Families often cut ceremonial slices for Christ, the household, or absent family members before serving individual portions. Recipes differ by region and household, and vasilopita may be a sweet bread or a cake flavored with ingredients such as orange, lemon, or mahleb.