The coin-filled Greek New Year cake is called vasilopita.
A coin is hidden inside the cake before it is served. The person who receives the slice containing the coin is traditionally considered fortunate for the coming year. The cake is associated with Saint Basil, whose feast day is celebrated in Greece on January 1.
Families often cut the vasilopita in a prescribed order. A first slice may be dedicated to Christ, Saint Basil, the household, or absent family members, followed by slices for those present. Exact practices differ between families, regions, and organizations.
Vasilopita is not one single recipe. It may resemble a sweet bread, a cake, or a citrus-flavored pastry, depending on local tradition. What defines it for New Year celebrations is the hidden coin and the ritual sharing, not a fixed shape or ingredient list.