Cacao cultivation and consumption in Mesoamerica dates back well over three thousand years, with strong archaeological evidence from Olmec sites and clear cultural centrality among the later Maya and Aztec civilizations. It was consumed almost exclusively as a bitter, frothy drink, often spiced with chili, vanilla, or ground maize, and carried significant ritual, economic, and social weight — cacao beans functioned as a form of currency across parts of Mesoamerica, used to pay tribute, wages, and market prices well into the colonial period. The Aztec elite in particular treated cacao as a prestige good, associated with warriors, nobility, and religious ceremony rather than as an everyday sweet treat — Spanish colonial-era chroniclers recorded Aztec marketplace prices denominated directly in cacao beans, with a single turkey egg reportedly worth around three beans and a good turkey hen worth closer to a hundred.
Spanish contact with cacao began during the conquest of the Aztec Empire in the early sixteenth century, and the crop, along with the drink, made its way back to Spain by the mid-1500s. Spanish colonists and clergy in the Americas adapted the drink for European tastes — most significantly by adding sugar, which transformed a bitter ceremonial beverage into something closer to what would eventually become recognizable as hot chocolate. From Spain, the drink spread gradually through European royal courts over the following century, remaining an expensive luxury restricted to the wealthy until industrial processing in the nineteenth century — critically, the 1828 invention of the cocoa press by Dutch chemist Coenraad Johannes van Houten, and later the development of solid eating chocolate — brought the price down and turned chocolate into a mass consumer product.