A flat, even cooking surface for the pots that scorch. Set this perforated stainless steel disc over the burner and it absorbs and spreads the heat, so sauces, soups, oatmeal and rice simmer slowly without sticking or boiling over, and pans with hot spots cook evenly. It works on electric, gas and glass stovetops, keeps pan handles cooler, and steadies small cookware like a butter warmer or stovetop espresso maker on a large burner. The long stay-cool handle keeps your hand away from the flame and pulls off for compact storage.