Maya & Aztecs
Legend has it that the feathered god of the wind, Quetzalcoatl, brought cocoa to mankind from heaven. The Greek name Theobroma cacao , translated as "food of the gods", is therefore very apt.
The Aztec leaders are said to have sipped the holy bean daily in the form of a sharp, bitter drink. In addition to cocoa beans, their drink contained various spices, chili, allspice and wild honey. It is said that King Montezuma II devoured up to 50 cups before he devoted himself to his lovers. So it makes perfect sense that cocoa was declared currency. 10 beans for a rabbit and a measly 100 for a slave.