A very light and easy-to-handle paulownia teacup. You can freeze rice or warm it in the microwave. It is washable and easy to clean. Plump and warm with the power of steam. When heated in a microwave oven, the moisture absorbed by paulownia becomes steam and is released and filled. Warm the rice inside evenly, and at the same time, excess heat and steam are moderately released from the gap between the lid and the main body. It will be plump and freshly cooked. Frozen rice comes back to life. Humidity control effect that keeps the taste It absorbs excess steam from freshly cooked rice and releases moisture as it dries. The rice is not sticky and maintains a moderate amount of moisture, so you can enjoy it at any time. The main body does not heat up easily Paulownia is a wood with very low thermal conductivity, so even if it is heated in the microwave, the main body does not heat up easily and can be taken out immediately. Can be used as a teacup It has a handy rounded shape, so you can use it on the table as it is after defrosting, and you need to wash one less. It can be used not only for white rice, but also for various dishes such as eel bowl, millet rice, chirashi sushi, and soboro bowl.