USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperStorage temperature, how long it has been opened, and package integrity change the answer — and those details are easy to miss.
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Check Your Exact Situation

Last reviewed: January 2026
Reviewed by the Can I Eat Expired Editorial Team using official USDA, FDA, and CDC food safety guidance. How we assess food safety risk
May be safe if properly stored and showing no spoilage signs. Check carefully before consuming.
⏱️ Safe for up to 3 days after expiry if properly stored and showing no spoilage signs.
⚠️ Eating spoiled dairy is one of the most common causes of food poisoning at home.
Fridge
4°C (40°F)
Keep submerged in brine or wrapped in plastic
Dairy products require consistent cold storage (40°F or below) to prevent spoilage. A refrigerator thermometer (Amazon) helps ensure your refrigerator maintains safe temperatures.
10 days
Sour smell, mold, watery texture
Transferring opened dairy into an airtight container (Amazon) can reduce odor absorption and moisture exposure.
Use in caprese salad or pizzas
Burrata, fresh mozzarella
The expiration date on buffalo mozzarella indicates the point after which the cheese may no longer be safe to consume due to spoilage or bacterial contamination. However, the best quality of buffalo mozzarella is typically within a few days of production when it is fresh, creamy, and has a delicate flavor. While it may still be safe to eat after the expiration date if stored properly, the quality may deteriorate, with changes in texture and taste.
To determine if Buffalo Mozzarella has gone bad, look for any signs of mold on the surface, a sour or unpleasant odor, or a slimy or discolored texture. Fresh Buffalo Mozzarella should have a clean, milky scent, a soft and moist texture, and a white, uniform color. If you notice any of these indicators, it's best to discard the cheese to avoid potential foodborne illnesses.
Buffalo mozzarella is a fresh cheese made from buffalo milk. It is highly perishable and can harbor harmful bacteria if not stored properly. To reduce the risk of foodborne illness, it is crucial to always keep buffalo mozzarella refrigerated below 40°F (4°C). Avoid leaving it at room temperature for extended periods, especially in warm conditions, as this can lead to bacterial growth and spoilage.
To prolong the freshness of buffalo mozzarella, store it in its original packaging submerged in its own liquid or in a container filled with fresh, cold water. Change the water daily to maintain freshness. Avoid storing buffalo mozzarella in airtight containers or wrapping it too tightly, as it can cause the cheese to become rubbery. Consume buffalo mozzarella within a few days of opening for the best taste and texture.
Buffalo mozzarella originated in Italy, particularly in the Campania region near Naples. It is traditionally made from the milk of water buffaloes and has a Protected Designation of Origin (PDO) status in the European Union, indicating its cultural and historical significance. The cheese is known for its soft, creamy texture and mild, slightly tangy flavor. It is a staple ingredient in classic Italian dishes such as Caprese salad and pizza Margherita.
Buffalo Mozzarella is safe to consume if left at room temperature for a few hours, but it's best to refrigerate it promptly to maintain quality and reduce the risk of bacterial growth. If it has been left out for more than 2 hours in temperatures above 40°F (4°C), it's safer to discard it to avoid foodborne illness.
Once opened, Buffalo Mozzarella should be consumed within 2-3 days for the best quality. Make sure to store it in the refrigerator in an airtight container or in its original packaging with brine to maintain freshness and flavor.
The type of container can impact the shelf life of Buffalo Mozzarella. It's best to keep it in its original packaging or an airtight container to prevent moisture loss and absorption of odors from the fridge. Avoid storing it in containers that are not airtight, as it may affect its taste and texture.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionImportant: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out.
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