Fujihoro Cook and Serve Deep Casseroles are porcelain enameled on steel with two tone gradient hues which are colorful and color-fast. The product comes with great insulating properties which is ideal for low simmering. Our products’ are extremely hygienic as the surface has a non-porous hardened vitreous coating which does not absorb any residue from previously cooked food, naturally keeps food from sticking and is absolutely stain resistant, odorless, bacteria free, easy to clean and retains the natural taste and flavors of food being cooked. Additionally, it won't ever react with acidic foods like vinegar, lemons or tomatoes and change their flavor, unlike cast iron. The product is lightweight, durable, good for all heat sources including induction and perfect for the modern kitchen.