Cooking fuel is an important part of any kitchen. Two common types of cooking fuel are Sterno and GAS. Sterno is a type of canned cooking fuel that is made from denatured alcohol and is used for heating food. It is a 6 letter word. GAS is a 3 letter word and is a type of fuel that is used to power stoves and ovens. It is usually derived from petroleum or natural GAS. Both Sterno and GAS are popular cooking fuels that are used in many kitchens around the world.