This is a thick iron plate made of black iron plate that can be used outdoors. There are endless possibilities depending on your ideas. Features of the product: Once you heat the iron plate, you can sufficiently cook the ingredients with the heat storage and radiant heat of the iron plate even on low heat. Thin iron plates have low heat retention, so you need to keep the heat high to cook the ingredients. As a result, only the surface of the ingredients gets burned, and the surface burns before the inside is cooked. The heat retention of 4.5mm, 6mm, or 9mm thickness is considerable.