Ono is a very good dish to warm you up after cold nights and it is also quite popular in Japan. You can also mix the ingredients with some vegetables and make a salad. In Japan, there are various ways of cooking Ono but most of the traditional ways use a wok. The wok has its own benefits over other methods since this method makes it possible to cook both steamed dishes as well as those that need high heat or stir-frying.