The clay pots have been used for storing the food and making the food for thousands of years. Cooking in a glassless clay pot, it first immersed in water dates at least to the Etruscans in the 1st century BC. However, The Romans adapted the technique and the cooking vessel, which is known as the Roman pot. In Japan, clay pots are mentioned from the 8th century and are originally called nabe. However, clay pot cooking is been forgotten once the metal pots are available.