How do I know if my food has been contaminated by aluminum from aluminum foil?

Aluminum contamination from aluminum foil is rare, but you can check for it by observing the food's surface for any visible aluminum flakes or discoloration. Typically, aluminum foil doesn't transfer to food unless it's in contact with acidic or salty foods at high temperatures. If you notice a metallic taste or smell, it might be an indication of contamination. However, these signs are not definitive. For precise detection, you would need to conduct laboratory tests. To prevent contamination, avoid wrapping acidic or high-moisture foods in aluminum foil, and do not use foil with scratched or damaged surfaces.