To keep prepared spaghetti sauce from spoiling in the refrigerator overnight, follow these steps:
Cool it down quickly: After cooking the spaghetti sauce, allow it to cool down quickly before placing it in the refrigerator. Divide the sauce into smaller, shallow containers, as this helps it cool faster and more evenly.
Cover and seal tightly: Use airtight containers or cover the sauce tightly with plastic wrap or a lid to prevent exposure to air, which can promote spoilage.
Refrigerate promptly: Place the sauce in the refrigerator within two hours of cooking. Refrigeration slows down bacterial growth and helps keep the sauce safe to eat.
Maintain a consistent temperature: Ensure your refrigerator is set at or below 40°F (4°C) to prevent bacterial growth and spoilage. Avoid keeping the sauce in the refrigerator door, as it's the warmest part of the fridge.
Use clean utensils: When serving the sauce, use clean utensils to avoid cross-contamination and the introduction of bacteria.
Check for signs of spoilage: Before using the sauce, inspect it for any unusual odor, color, or texture changes. If it looks or smells off, discard it.
Store for a limited time: While cooked spaghetti sauce can generally be safely stored in the refrigerator for 3 to 4 days, it's best to consume it within 1 to 2 days for the best quality and safety.
If you have a large batch of spaghetti sauce that you won't consume within a few days, consider freezing it in portioned containers for longer storage. Frozen spaghetti sauce can typically be kept for 2 to 3 months without significant quality loss. Remember to label the containers with the date to keep track of their freshness.