If you’re unsure whether a food can is terrible, you can check the lid for signs of spoilage. Many canned foods are vacuum-sealed to maintain freshness and hygienic conditions. If the lid seems to be loose, or if you notice moisture, the food may have gone wrong. If this is the case, it’s time to discard it. To make sure canned food is safe to eat, check its lid for mold or any other signs of contamination.
Cans with screw bans are the easiest to identify. They can quickly leak and swell when they get damp.