Pepperoni pizza

Photo: barol16/iStock/Thinkstock

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Just as with cooked meats, pizza is usually good for three or four days in the refrigerator. (Wrap it tightly to keep it tasting fresh.)

One more thing: If the pizza sat out for a few hours before being refrigerated, Tong says you're safest reheating it before eating. The skillet method is the most effective way we've seen to revive a soggy bottom, giving you a moist crust and making the cheese melt.