The term Spanish Stew Pot is composed of two words, OLLA and Stew Pot. OLLA is a Spanish word meaning a type of pot or jar used for cooking stews and other dishes. It is traditionally made from clay and is used to simmer food slowly over low heat. Stew Pot is an English word meaning a large pot used for making stews. It is usually made from metal and is designed to hold a large quantity of liquid. Together, the two words form the term Spanish Stew Pot, which refers to a traditional Spanish cooking vessel used to make stews.