Chocolate is a food made from roasted and ground cocoa beans that can be a liquid, solid, or paste, either on its own or as a flavoring in other foods. The cacao tree has been used as a source of food for at least 5,300 years, starting with the Mayo-Chinchipe culture in what is present-day Ecuador. Later, Mesoamerican civilizations consumed cacao beverages, of which one, chocolate, was introduced to Europe in the 16th century. The seeds of the cacao tree (Theobroma cacao) have an intense bitter taste and must be fermented to develop the flavor.
https://en.wikipedia.org/wiki/Chocolate