Myth: You shouldn’t refrigerate food in an open can because the metal will contaminate it.

Reality: Metal cans are lined so that food can remain stable at room temperature for extended periods. The drawback associated with keeping food in an open can is that it can’t be sealed tightly, which can affect a food’s color and taste.

Bottom Line: If you have half a can of minestrone left over from lunch, pour it into a glass or plastic container that can be properly closed for storage and refrigeration.