A ceramic jug is a type of pottery vessel used for storing and pouring liquids. It is also known as an OLLA, which is a Spanish word meaning 'POT'. Ceramic jugs are usually made from clay and fired in a kiln to give them a hard, durable finish. They are often decorated with intricate designs and glazes, making them a popular choice for decorative pieces. Ceramic jugs can be used for a variety of purposes, including storing and serving beverages, cooking, and even as flower vases.