How to remove burnt food?

Boil some water in the pan with a cut up lemon. Let cool then use a plastic scouring pad.

Give it a good soak with baking soda and vinegar.

Soak the pot by placing baking soda and hot water in them and letting them soak for a while then use a scratch free pot scrubber to remove the loosened food.

Inside: boil dishwasher powder

Outside: scrub with barkeeper's friend and emery block or SOS pad

I put in a few inches of water and a few drops of dish soap and let it soak. If it's really bad, I will put it on the stove and let it simmer for a few minutes and then let cool.