Roscón de Reyes is a traditional Three Kings treat. Shaped like a large doughnut and usually tasting a little of lemon, it is decorated with dried fruits and contains a surprise or two for the lucky finder. The gift is usually a coin, though sometimes it also contains the traditional dried bean as a joke. Its origins go back to the round cakes that were offered to the god Janus during Roman Empire times. It is available at this time of year at bakeries and supermarkets.