The origins of the beans are in Jericho, in the Christian era. As there is also recorded in the books and writings found, which was consumed in ancient Egypt, Greece and Rome. The Romans, for example, eat to boost their virility. The practice, which has always existed Roscón of Kings, we have inherited from the Romans and it was they who devised it to put a bean in the roscón and touched him was the king of the party. It belongs to the legume family, and subfamily of Fabaceae. They are consumed in winter, from January to June.