A comprehensive new book on the archaeology of Barbados features a chapter by Lindsay Bloch on the elemental analysis of historic coarse earthenwares found in plantation contexts. She found that there was a switch to locally-made products at the time that plantations began producing sugar, a process that required coarse earthenware molds and jars.
Read the whole book Pre-Colonial and Post-Contact Archaeology in Barbados: Past, Present, and Future Research Directions