SignificanceThe Classic Maya (AD 300–900) technology of producing salt by boiling brine in pots over fires in wooden buildings at the Paynes Creek Salt Works, Belize, is consistent with this common and productive method elsewhere in the world in antiquity, historic, and modern times. We report the surprising results of a use-wear study of the edges of chert stone tools that indicates most were used for cutting fish or meat or scraping hides. Like the ancient Roman, Asian, and other civilizations, the Classic Maya evidently produced salt and salted fish—storable commodities for marketplace trade.