New, open box rice mug. The Daiso Microwave Oven Rice Cooking ships from USA. Mug is a convenient and compact rice cooker that utilizes the microwave to steam rice to perfection. Durable ceramic in a sleek black color, this Japanese food accessory is perfect for cooking rice quickly and easily. Its compact size makes it ideal for small kitchens or on-the-go use, providing a simple and efficient way to enjoy delicious steamed rice anytime.