Published caption : At the hot springs of Beppu, visitors, especially those who enjoy cooking, are welcome to use the facilities of the in-house jigoku-mushi kobo (steamed-dish kitchens) and prepare a variety of simple treats for themselves. First, you select the type of food you like and then the person in charge of the place will show you how to use the steam oven which, of course, uses steam conducted from some of the nearby hot springs. Steaming time varies depending on the ingredients. Eggs, for example, take only about 10 minutes to cook while seafood needs up to 20 minutes. Sweet potatoes are ready in half-anhour; it takes 40 minutes to steam chestnuts from scratch and rice takes a whole hour to cook.