Ever make some tuna salad for lunch but then have leftovers? Not to worry, you can have it again for lunch in the next three to five days, as long as it's kept refrigerated. Don't let mayonnaise-based salads such as tuna, potato or macaroni salad sit out at room temperature for more than two hours. Otherwise, it is likely to start growing bacteria. Keep these salads refrigerated, and you'll have lunch for the week!
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