The dinner was a success, the guests are gone, and your cast iron pans—well, they've seen better days. The TipNut blog suggests pulling out a spare potato and going to town on your sauce-crusted cookware:
To remove rust, slice a fresh potato in half and cover the cut end in liquid dish detergent. Rub the rust spots away with the potato, rinse clean, dry, then apply a light layer of oil to the cookware.
Hit the link below for inexpensive cleaning tips for other kinds of cookware. Photo by cybrgrl.