Patrick Edward McGovern ca. 7000-6600 B.C. It was a mixed fermented beverage of rice, honey, and grape and/or hawthorn ("Crataegus pinnatifida" and "C. cuneata") fruit. The laboratory and collaborators began studying some of the most ancient chocolate from ancient Mesoamerica (ca. 1400-1100 B.C.) in 2004 Jars from Puerto Escondido in Honduras were in the shape of the cacao ("Theobroma cacao") pod or fruit, as if to advertise the contents as being a chocolate beverage. The fruit's sweet pulp contains about 15% sugar, which naturally ferments to a 5 to 7% alcoholic beverage. This beverage might have led to the domestication of the tree.
Black drink theorized to be black drink rituals, including what some anthropologists have interpreted as vomit issuing from the mouths of mythological beings. Pottery samples recovered from sites in modern Southwestern United States and Northwestern Mexico have tested positive for the ratio of methylxanthines associated with those produced by "Ilex vomitoria". The same study also identified methylxanthines ratios associated with "Theobroma cacao". Neither plants are native to the areas from which the pottery samples were recovered, which suggests trading between areas where those plants are native. The chemical analysis also suggests a possible increase in drinks prepared from cacao after the year