The Energy Saver protects the outside of your pan from the gas flame; it also spreads the heat more evenly & efficiently. Simply place the Swiss Energy Saver Protector on your gas ring, put your pan on top & turn on the ring. The aluminium disc will spread & store heat efficiently. Helps to prevent damage to the side of your pan from a fierce gas flame. Use a lower setting as the disc will spread the heat more efficiently. Choose the size that’s larger than the pans you want to place on it.