In order to take advantage of the texture of red beans, it is characterized by using two types of beans: beans that are boiled so as not to break the grains of red beans, and beans that are boiled to crush them. Steaming uses soft secondary steam that has been soaked in water again with a large primary steam with strong pressure, resulting in a really moist steaming result. Like castle-town, it is a bite-sized piece that can be enjoyed as a tea ceremony confectionery. The crisp texture of the two types of beans and the moist texture of careful steaming harmonize perfectly in the mouth.