How to remove the black dirt in the iron pan?
Orange method. Tell an orange cut into 4 pieces, put it in the pot, add water and boil for 10 minutes, then turn off the fire and soak for 2 hours, then scrub it with a pan cloth.
Brine method. Put a little salt in the pot, add water to boil, then turn off the fire. When the water temperature is down, wipe the bottom with a steel ball. The black dirt is easy to clean.
Honey method. Apply a little honey to the dirt at the bottom of the pot, and clean it in half an hour with pan cloth.