Before cleaning your cast-iron pans there are some important things you should know to properly care for them and maintain their look. Those include the following advices:
Never use anything abrasive to scrub cast-iron surface out;
Avoid much contact with steel wool or other metal objects to prevent stripping the pan’s seasoning;
Never use liquid soap or detergents on a cast-iron pan, as they can strip the oils leaving the surface vulnerable;
Never put cast-iron pots and pans in the dishwasher, as this process can eat through the non-stick coating and promote rust.
It may seem amazing to you, but salt is what you need to have your cast-iron pans perfectly cleaned. Salt is a multipurpose mineral and it can successfully be used for cleaning different things in your household.
After cooking rinse the pan with hot water. If there is still greasy build-up fill the pan with hot water and place it back on the burner to have the water boil for several minutes. Boiling water is capable of dissolving food scraps. Dump the dirty water in the sink and rinse the pan. Wipe the surface with a soft dishcloth.
If the pan will not rinse clean that way, use a paper towel and a tablespoon of salt to rub its surface. Then, rinse and replenish the oil film by coating the inside surface with a dab of vegetable oil or shortening. Vegetable sprays work especially well for this purpose. With a paper towel, wipe the fat into the bottom and the sides of the pan. Store the pan in a cool, dry place and cover with a paper towel to prevent moisture from building up inside the pan.