This Hida Konro grill was carved from a single block of the finest quality Keisodo clay. Keisodo is a natural porous clay material that can be found in several regions in Japan where the earth is rich with volcanic ash and marine-based fossilized residue. Keisodo conducts heat evenly and efficiently and Hida Konro have been used in Japan for hundreds of years. Liquid fuel (gel fuel), solid fuel such as canned camping fuel, or natural wood charcoal can be used with this grill.