Signs Your Canned Foods are No Longer Safe

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Discoloration

Sometimes discoloration is an indication of a reaction between the can's contents and the metal, but at the very least, a change in color usually means the food will taste "off." If the liquid—which is normally clear—is cloudy, throw out the food. It's a serious indication of botulism.

Want to know more? Here's How to Tell When Your Food has Gone Bad.