Clean Cast Iron with a mild dishwashing liquid.
Dry it completely post cleaning it is an important step that will keep new rust spots from appearing. First, dry with a cloth, then place it on a range burner and let the heat dry your pot or pan the rest of the way.
Soak paper towels with cooking oil and use them to coat the inside of your cookware with a thin layer of oil.
Place the cookware on the oven or burner and heat it for 3-6 min.
Remove your pan from the oven/burner and let it cool. It's now ready to use!