How to Remove Burn Marks – Good housekeeping
1. Fill your pot with hot water and a few squirts of dishwashing liquid. Then put your pot filled with soapy water on the stove and bring it to a simmer.
2. Let the pot simmer for 15 minutes or more (depending on how much food is stuck on the bottom) and use a spatula to carefully loosen and coax the burnt-on bits off the bottom and sides as they soften.
3. When all of the bits have been removed from the surface of the pot, empty it and scrub it clean with a pad.
4. If it’s a stainless steel pot or pan, use a stainless steel cleaner, to restore shine. “Keep in mind that some discoloration may remain, depending on how badly the pot was burned, but it’s still safe to use.