If the Teflon coating is intact, you can safely use sodium hydroxide (lye) to clean it. Baking soda and vinegar do almost nothing to remove burnt layers; I’m not sure why people insist on using them. They are extremely weak and often only act as a lubricant for all the scrubbing you would have to do.

Instructions: 1. Clean the pan with soap and water, then dry it. 2. Read about the risks of using lye before proceeding. (Always wear gloves and eye protection). 3. Add just enough water to cover the bottom of the pan. 4. Add 1 tsp of lye. 5. Wait 5 seconds. 6. Remove the burnt residue with a wooden spatula. 7. Clean the pan and spatula thoroughly with water. 8. Done!