How to Clean Old & Rusty Cast Iron Cookware
Cast-iron cookware rusts when cared for inappropriately. After you wash your cast-iron cookware, it's imperative that you immediately dry it thoroughly and store it in a cool, dry place or rust may develop on its surface. Cleaning old and rusty cast-iron cookware involves stripping the rust away with an abrasive method. Fortunately, if the rust damage is not too extensive, you can restore the cookware back to its original appearance.
Tips & Warnings
Fine-grade sandpaper is an alternative to steel wool. To prevent rust, store your cast-iron cookware in a cool, dry place such as your oven. Remember to remove it before you use the oven. After removing rust and washing the cookware, you will need to reseason it.