To remove black corrosion from aluminum cookware:
1. Fill the pot or pan with a mixture of equal parts water and vinegar.
2. Bring the mixture to a boil over medium heat.
3. Reduce heat to low and simmer for 15 minutes.
4. Turn off the heat and let the pot or pan cool completely.
5. Empty the pot or pan and rinse it thoroughly with hot water.
6. If there are any remaining black spots, use a soft sponge or cloth to scrub them away.
7. Dry the pot or pan with a clean cloth.
Your aluminum cookware should now be free of black corrosion. If the black corrosion is particularly stubborn, you may need to repeat steps 1-7.
Here are some tips for preventing black corrosion on aluminum cookware:
* Avoid using aluminum cookware to cook acidic foods, such as tomatoes, citrus fruits, and vinegar.
* Do not leave aluminum cookware sitting in water for long periods of time.
* Dry aluminum cookware thoroughly after washing it.
* Store aluminum cookware in a cool, dry place.
By following these tips, you can help to keep your aluminum cookware looking its best for years to come.