Milk-based gravies should not be stored for more than 2 days due to the risk of bacterial growth and spoilage. It's best to consume them within 1-2 days for optimal safety and quality.
Milk-based gravies are susceptible to bacterial contamination and spoilage because milk provides a favorable environment for bacterial growth. Bacteria thrive in moist, protein-rich environments at room temperature or even in the refrigerator over extended periods. Storing milk-based gravy for longer than 2 days significantly increases the risk of foodborne illness. Even if the gravy appears and smells fine, harmful bacteria may still be present. To ensure safety, it's crucial to refrigerate the gravy promptly after cooking and consume it within 1-2 days. When reheating, bring the gravy to a simmer to kill any potential bacteria that may have grown during storage. If you are unsure about the gravy's freshness, it's always best to discard it.
To extend the shelf life of your gravy slightly, cool it rapidly before refrigerating. Place the gravy in a shallow container to allow for quicker cooling, and ensure your refrigerator is set to a temperature below 40°F (4°C).