Chocolate is a psychoactive food. It is made from the seeds of the tropical cacao tree, Theobroma cacao. The cacao tree was named by the 17th century Swedish naturalist, Linnaeus. The Greek term theobroma means literally "food of the gods". Chocolate has also been called the food of the devil; but the theological basis of this claim is obscure.
Cacao beans were used by the Aztecs to prepare to a hot, frothy beverage with stimulant and restorative properties. Chocolate itself was reserved for warriors, nobility and priests. The Aztecs esteemed its reputed ability to confer wisdom and vitality. Taken fermented as a drink, chocolate was also used in religious ceremonies. The sacred concoction was associated with Xochiquetzal, the goddess of fertility. Emperor Montezuma allegedly drank 50 goblets a day. Aztec taxation was levied in cacao beans. 100 cacao beans could buy a slave. 12 cacao beans bought the services of courtesan.