The Heat Diffuser we offer is the perfect flame tamer for gas stoves and also works great for gauging the temperate on electric stoves. It is also known as a flame deflector as this light metal pad is inserted between the pressure cooker or other pot and the flame or hot coil of a stove. It helps distribute heat evenly and thus prevents burning. A Heat Diffuser must be used when cooking with pottery or Japanese donabe (earthenware) pots. Unlike many Heat Diffusers now on the market, made with asbestos, ours is stainless steel and has a thick, wooden handle with a suede ring for easy hanging.