Shelf Life Tips

• How long does pesto last once opened? The precise answer depends to a large extent on storage conditions  to maximize the shelf life of opened pesto, keep it refrigerated and tightly covered.
• How long does pesto that was sold unrefrigerated last in the fridge once opened? Pesto that was sold unrefrigerated will keep for about 1 to 2 weeks in the fridge after opening, assuming continuous refrigeration.
• To further extend the shelf life of opened pesto, freeze it: to freeze pesto, place inside covered airtight containers or heavy-duty freezer bags.
• How long does pesto last in the freezer? Properly stored, pesto will maintain best quality in the freezer for about 4 months, but will remain safe beyond that time.
• The freezer time shown is for best quality only  pesto that has been kept constantly frozen at 0° F will keep safe indefinitely.
• How can you tell if opened pesto is bad or spoiled? The best way is to smell and look at the pesto: if the pesto develops an off odor, flavor or appearance, or if mold appears, it should be discarded.

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Sources: For details about data sources used for food storage information, please click here