To remove burned on grease from a pan, let the pan soak in a soda and water solution for 10 minutes before washing. An alternative to this method is to scrub the pot with dry soda and a moist scouring pad. For a badly-burned pans with a thick layer of burned on grease pour a thick layer of soda directly on the bottom of the pan. Then sprinkle on enough water to moisten the soda. Let the paste stay on the pot overnight. Scrub it clean the next day.