Prehistoric Salt Production at El Salado, Veracruz, Mexico

El Salado is a prehispanic salt production site located in the Tuxtla Mountains of southern Veracruz, Mexico. Fieldwork at the site was conducted to determine the methods of salt production, the character of the archaeological residues produced, the scale of the industry, and the history of production. El Salado contains two major occupations, the first dating to the Early Formative period and the second to the Late Classic period. During the Early Formative, solar evaporation in pottery trays was the primary method of salt production. This method was supplemented by some salt-making that involved boiling brine in tecomates. During the Late Classic, in contrast, boiling salt water became the preferred method of production. Late Classic brine reduction involved a two-step process. The salt level in the brine was first increased by boiling in collared jars. This brine was later reduced to loaves by boiling in shallow pottery vessels called cazuelas.