The traditional Greek New Year's cake that may contain a lucky coin is called vasilopita.
Vasilopita is served on New Year's Day in Greece and in Greek communities around the world. A coin is traditionally hidden inside the cake before it is baked, or placed into it afterward in some modern versions. The person who receives the slice containing the coin is said to have good luck for the coming year.
The name means “Basil's pie” and is connected with Saint Basil, whose feast day is celebrated on January 1 in the Greek Orthodox tradition. Families and organizations often cut the cake ceremonially, beginning with symbolic slices for religious figures, the household, or the community before serving individuals. Vasilopita can vary by region: recipes may resemble a sweet bread, cake, or citrus-flavored loaf, so its exact texture is not universal.