SPAGHETTI / PASTA SAUCE, TOMATO-BASED (INCLUDING MARINARA SAUCE), COMMERCIALLY CANNED OR BOTTLED — OPENED
The precise answer to the question “How long does spaghetti sauce last once opened?” depends to a large extent on storage conditions — keep opened spaghetti sauce refrigerated and tightly covered at all times.
Do not store spaghetti sauce in opened metal can — refrigerate in covered glass or plastic container after opening.
To further extend the shelf life of opened spaghetti sauce, freeze in covered airtight containers or heavy-duty freezer bags.
How long does spaghetti sauce last in the freezer for safety purposes? The freezer time shown is for best quality only — foods kept constantly frozen at 0° F will keep safe indefinitely.
How long does spaghetti sauce last at room temperature? If kept at temperatures above 40 °F, spaghetti sauce will rapidly develop signs of spoilage; spaghetti sauce should be discarded if left for more than 4 hours at room temperature.
How can you tell if spaghetti sauce has gone bad? If spaghetti sauce develops an off odor, flavor or appearance, or if mold appears, it should be discarded.
Sources: For details about data sources used for food storage information, please