Use the Kuhn Rikon Energy Saver/Flame Protector to disperse heat from gas burners evenly. They actually help speed cooking. This oversized aluminum disk concentrates flame and directs it to where it's needed for greater energy efficiency even on the smallest pots or pans. Prevents scorching of your fine stainless steel cookware, Swiss Durotherm cookware or Duromatic Pressure Cooker by gas flames. Non-stick coated for easy cleaning. For use on gas stoves ONLY. 11-inch diameter