Ogasawara Rikucho Onigiri Grill This is a masterpiece, the onigiri grill, left behind by the cast iron artist Rikucho Ogasawara. As the name suggests, it can be used to grill onigiri (rice balls) until they are fluffy and golden brown. Pancakes and mini pizzas can be baked in 3-4 minutes. You can move it to the table while it's still hot and enjoy the crispy, scorched bits and the fluffy texture. Thank you for looking.