Chocolate
Science confirmed historic Existence
Aztec (now: Veracruz, Mexico)
Ceramic vessel with residues from the preparation of chocolate beverages has been found at archaeological sites dating back to the Early Formative (1900–900 BC) period. For example, one such vessel found at an Olmec archaeological site on the Gulf Coast of Veracruz, Mexico dates chocolate's preparation by pre-Olmec peoples as early as 1750 BC.