Cooking Oil Sprays Bad for Non-Stick Cookware

​Oil spray cans contain butane (or other forms of propellant) which helps create the pressure in the can to spray the oil when the nozzle is pressed. Once sprayed, the butane turns into gas and disappears and the oil is released onto your surface. If you are spraying onto a hot pan, tiny amounts of oil are brought to an extreme heat and can cause damage to your pan, especially if it is non-stick. It is best to spray the oil onto a cold pan before heating and better still, spray the food and then add to the heated pan.