Using the same criteria as before, let’s take a look at how cheese, eggs and dairy fare during a power outage. Soft cheeses like mozzarella, cottage cheese, blue cheese, ricotta and cream should be thrown out. Low-fat and shredded cheeses should also be tossed. Processed cheeses, hard cheeses like Provolone, Romano, Swiss, cheddar, Colby, and grated parmesan should all be safe to keep, however. Most items that contain eggs are not safe to keep, including fresh eggs, quiches, puddings, custards, and hardboiled eggs. As for dairy, you can keep margarine and butter. But any opened baby formula, milk, sour cream, buttermilk, yogurt, soy milk and eggnog should be thrown away.
