When aluminum items become discolored in the dishwasher, it is usually due to a chemical reaction between the aluminum and certain minerals or chemicals in the water or detergent. Here are a few methods you can try to restore the appearance of discolored aluminum:
Vinegar Soak: Create a mixture of equal parts water and white vinegar. Submerge the discolored aluminum item in the solution and let it soak for several hours or overnight. After soaking, scrub the aluminum gently with a soft brush or sponge to remove the discoloration. Rinse thoroughly with water.
Baking Soda Paste: Make a paste by mixing baking soda with water until you achieve a thick consistency. Apply the paste to the discolored aluminum item and gently scrub with a soft brush or sponge. Allow the paste to sit on the aluminum for a few minutes before rinsing it off with water.
Lemon Juice and Cream of Tartar: Create a paste by mixing lemon juice and cream of tartar. Apply the paste to the discolored aluminum and let it sit for about 15-20 minutes. Scrub the aluminum gently with a soft brush or sponge, then rinse thoroughly with water.
Commercial Aluminum Cleaner: If the above methods don't yield satisfactory results, you can try using a commercial aluminum cleaner specifically designed to remove stains and discoloration from aluminum surfaces. Follow the instructions provided with the cleaner for the best results.
It's important to note that while these methods can help restore the appearance of discolored aluminum, they may not be able to completely eliminate deep-set stains or pitting caused by prolonged exposure to harsh dishwasher conditions. In such cases, it may be best to consult a professional or consider replacing the aluminum item if the discoloration is severe or affects its functionality.