There are multiple ways to clean aluminum, but the best method is with a mixture of vinegar and water. This vinegar mixture is a good choice for cleaning aluminum household items such as kettles, pots and other types of cookware.
To clean aluminum with vinegar and water, one part vinegar should be added to two parts boiled water. The aluminum item should remain immersed in this mixture for about half an hour to an hour. The vinegar helps to loosen any residues that may be present on the aluminum surface, so that it can be scraped off easily.