How to Clean Discolored Stainless Steel Pots and Pans. If you're not sure how to clean discolored steel pots and pans, you can use a popular method: white vinegar. This method works particularly well on the inside of pots and pans. Just pour some vinegar into the pots and cookware and allow them to soak for 5 minutes. After that, rinse them well. The vinegar will leave your stainless steel cookware looking like new. … [Read more...] about How to Clean Discolored Stainless Steel Pots