I think there are four ways to solve it:

1. Put salt in it, stir-fry it until it turns black, then pour in water and boil it for a while. After removing it, wipe it dry with paper, put it on a low fire and dry it for a while, then spread it evenly with salad oil, and it should be fine. 2. Apply a layer of honey and wipe it gently with a scouring pad after half an hour and it will be clean.

3. Cut the oranges, put them in a pot and boil for 15 minutes, then soak for 2 hours, the black residue will float up 4. Tap the toothpaste peel to treat the non-stick pan

If there is dirt on the non-stick pot, you can cut the used toothpaste peel along one side, then use a hammer to beat it flat, and keep the remaining toothpaste on it. Use the moist toothpaste peel to wipe the surface of the pot directly and remove the remaining toothpaste. Apply it on the dirt, and finally rinse off the toothpaste and dirt with water. You can also apply a little vinegar on the stain, wait for a period of time, and then scrub with clean water to remove it.

Good luck