The food product made from the roasted seeds (beans) of the cacao tree. The hulled meat of the bean, the nib, is ground and processed, into various forms for eating and drinking. For thousands of years, chocolate was only a beverage, xocoatl: it has only been eaten in solid form since 1847.  Eating chocolate (candy) is generally mixed with sugar, vanilla, and sometimes other flavorings and generally lecithin as an emulsifier; milk chocolate also contains milk. Quality manufacturers may also add cocoa butter for extra richness and mouthfeel. Chocolate for cooking is left unsweetened and generally unflavored.