Remove Rust From Cookware with a Potato

We've mentioned before that you can clean cast-iron cookware with a potato, but cast iron isn't the only cookware you can clean rust and wear from with a sliced-up tuber. Any rusted cookware that's showing its age can be cleaned up with a potato and a little baking soda or dish soap.
Re-Nest reminds us that any metal cookware that's getting a little rusty can be cleaned with a potato cut crosswise dipped in a little baking soda or dish-soap. We wouldn't recommend using dish soap on your cast iron cookware, so your milage may vary there, but for your other non-stick or metal pots and pans, a potato can be a good way to scrub up rust and make your cookware look like new.

http://cajuncastiron.com/potato.asp