In Greek New Year's Eve tradition, the cake that may contain a hidden coin is vasilopita.
Vasilopita is a New Year's cake or bread named after Saint Basil, whose feast day is celebrated on January 1 in the Greek Orthodox tradition. A coin, called a flouri, is baked into the cake before it is served. The person who receives the slice containing it is traditionally considered fortunate for the coming year.
Families often cut ceremonial slices for Christ, the household, and absent relatives before distributing slices to guests. Recipes vary by region and family: some versions resemble a sweet yeast bread, while others are closer to a citrus-flavored cake.
The hidden coin should be placed carefully and diners should be warned, since it is a real object rather than an edible decoration. Vasilopita is also served in Greek communities outside Greece, including family, church, and workplace gatherings.