Pour 1 cup baking soda and 1 cup water into a bowl. Stir with a spoon until the mixture is incorporated and has created a paste. Scoop 1/3 of the mixture into the pan.
Scrub the paste into the pan surface with a vegetable scrubber in gentle, circular motions. This will remove any cooking residue that is causing the peeling.
Rinse the pan in cool water. Scoop another 1/3 of the paste into the pan and scrub it. Repeat again until the paste stops turning brown, which indicates that the residue is all gone.
Rinse the pan in cold water. Dry it with a dish towel.