The countless fine pores of the heat-resistant ceramic material absorb and release the moisture of the rice, regulate the moisture, prevent the rice from drying out, and preserve the delicious and chewy rice. Cook a large amount of rice at a time and store half of it in the refrigerator. If you microwave heat it when eating, you can save electricity and do not need plastic wrap than keeping it warm for a long time. It is a luxurious Iga clay ark that is perfect as a gift as a gem of Maid in Japan. Please feel the deep texture of Iga soil.