How Long is Mayo Good After the Expiry Date?

How Long is Mayo Good After the Expiry Date?

Updated June 10, 2025
CanIEatExpired.com Team
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How Long is Mayo Good After the Expiry Date?

Mayonnaise, a popular condiment loved by many, can often be found sitting in the back of the fridge, forgotten about until it's time to make a sandwich or potato salad. But what happens when you notice that the expiration date on the jar has passed? Is it still safe to use? In this blog post, we will explore the shelf life of mayo, how to determine if it's still good to eat after the expiry date, and some tips for proper storage to ensure food safety.

Understanding Mayo Expiry Dates

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Mayonnaise typically has a shelf life of about 2 to 3 months after opening if stored in the refrigerator. The expiration date printed on the jar is a guideline provided by the manufacturer to ensure the best quality and taste of the product. However, it's important to note that mayo can still be safe to eat beyond this date if stored properly.

Factors Affecting Mayo Shelf Life

Several factors can affect the shelf life of mayonnaise, including:

  • Storage Conditions: Mayo should always be stored in the refrigerator to maintain its freshness and prevent bacterial growth.
  • Contamination: Avoid using utensils or fingers to scoop mayo from the jar, as this can introduce bacteria that can spoil the product.
  • Cross-Contamination: Make sure to use clean utensils when handling mayo to prevent cross-contamination with other foods.
  • Quality of Ingredients: Higher-quality mayonnaise made with fresh ingredients may have a longer shelf life compared to cheaper, lower-quality options.

Is Expired Mayo Safe to Eat?

While consuming mayo past its expiration date is generally safe if it has been stored properly, there are a few signs to look out for to determine if it is still good to eat:

Signs of Spoiled Mayo

  • Off Odor: If the mayo has a sour or rancid smell, it is likely spoiled and should be discarded.
  • Strange Texture: If the mayo appears watery, curdled, or has an unusual texture, it is best to throw it away.
  • Mold Growth: Visible mold growth on the surface of the mayo indicates spoilage and should not be consumed.
  • Off-Color: Mayo that has changed color significantly from its original white or creamy appearance may be spoiled.

If you notice any of these signs, it's best to err on the side of caution and discard the mayo to avoid the risk of foodborne illness.

Proper Storage Tips for Mayo

To extend the shelf life of your mayonnaise and ensure food safety, follow these storage tips:

  1. Refrigeration: Always store mayo in the refrigerator, even before opening the jar, to maintain its freshness.
  2. Seal Tightly: Make sure to seal the lid of the mayo jar tightly after each use to prevent air and bacteria from entering.
  3. Avoid Cross-Contamination: Use clean utensils to scoop out the mayo and avoid double-dipping to prevent contamination.
  4. Check for Signs of Spoilage: Regularly inspect the mayo for any signs of spoilage, such as off odors or mold growth.

By following these simple tips, you can enjoy your mayo safely and minimize the risk of foodborne illness.

Conclusion

In conclusion, mayo can still be safe to eat after the expiration date if stored properly and free from signs of spoilage. Always trust your senses and use common sense when determining the freshness of mayo. By following the storage tips mentioned in this article, you can prolong the shelf life of your mayo and enjoy it worry-free. Remember, when in doubt, it's always best to throw it out to prioritize food safety.

Authoritative Food Safety References

These agencies and university labs inform every tip and health precaution we publish.

USDAOfficial guidance

USDA FoodKeeper – Cold Storage Guidelines

Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.

Visit USDA FoodKeeper
FDAOfficial guidance

FDA Produce Safety Rule & Grower Guidance

Field-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.

Visit FDA Produce Safety
CDCOfficial guidance

CDC Foodborne Illness Prevention Hub

Surveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.

Visit CDC Food Safety
ResearchUniversity research

Penn State Extension – Home Food Preservation & Safety

Peer-reviewed extension bulletins on safe canning, chilling, and reheating practices.

Visit Penn State Extension
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Our articles are created using a combination of AI assistance and human review. All food safety information is based on USDA guidelines and credible sources. Learn more about our review process here.