Aluminum molds produced and stamped by the Jell-O Company have become kitchen collectibles, more often hung on walls than used for the salads they were designed to shape. The prototype dates back to fourteenth-century England, where noble households fashioned flavored “jellies” in copper molds. In early America, copper molds lined with tin to prevent food poisoning were commissioned from the local tinsmith. In 1902 the Jell-O Company distributed instructions for having “your tinner” fashion a “mould.”