Does Mayonnaise Go Bad? How Long Does It Last? [Best Answer] in 2023

We all love Mayonnaise. it’s one of The Best Condiments that you can use for your favorite food. Made out of oil, Egg yolk, and vinegar, it’s no denying that it sure filled with different flavors that gives it the unique taste that we all love.

Yet, we can get too greedy while buying it that we buy too much and end up storing it past shelf life. When this happens, one question seems to arise consistently: Does Mayonnaise go bad? This is the question we are willing to answer in the following article.

Follow along to know whether Mayonnaise Can go bad or not, as well as shelf life and how to store mayonnaise so it can last as long as possible.

Does Mayonnaise Go Bad?

This is the question we are willing to discuss in this article. The answer is not as simple as you might have guessed, but we can say that Mayonnaise does go bad.

It still depends on the type of mayonnaise. As an example, Homemade mayo won’t last nearly as long as commercially sold mayo. This is because the raw egg yolk found in mayo can cause contamination and spoilage.

Want to learn How long does mayonnaise last? follow along these lines.

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How Long Does Mayonnaise Last?

This is a good question, knowing How long can mayonnaise last can help you determine if you should throw it away or still use it as it’s safe for consumption.

How Long Does Mayonnaise Last

The duration in which it can last is dependent on the brand, how it was stored, and the ingredient used in the making of the mayo. But generally speaking:

  • Unopened Mayonnaise jar can last as long as 3 to 4 months if stored properly in the pantry
  • Opened jar won’t last as long, around 2 months is the longest it can last if stored in the fridge.
  • Homemade mayonnaise has the shortest shelf life, barely lasting for more than a week, and can easily spoil if not stored securely and properly in a dark and cool place in the fridge.

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Mayonnaise Shelf Life [Full Chart]

Unopened3 – 4 months
Opened2 months
Homemade1 week

Now that we have known the average life span of your favorite condiments, it’s time to discuss how to store mayonnaise properly so it can last longer than that.

How To Store Mayonnaise?

Knowing How to store mayonnaise can make the difference between good mayo and spoiled mayo.

How To Store Mayonnaise

The Way to store mayonnaise can be summed up in the following points:

  • Storing unopened jar of mayonnaise is quite straightforward, just find a cool and dark place in the pantry where it’s away from any sources of heat. You can even store on the kitchen table as long as it’s away from heat.
  • Opened mayonnaise shall be stored in the fridge most of the time, and keeping it well sealed is a must to prevent any contamination to your jar of mayo. It’s not safe to keep it at room temperature like ketchup. And you shouldn’t treat it like BBQ Sauce. Always keep it cool and refrigerated.
  • Homemade Mayonnaise is probably the hardest to keep it in good condition as it spoils way too fast. The reason for that is the raw egg yolk used in the preparation of it. The best you can do is keep it sealed well and keep it in the fridge at all times. Forgetting it in room temperature can easily mean it went bad as it’s prone to bacterial growth.

knowing how to store mayonnaise is helpful, but you know what’s more helpful? knowing how to tell spoiled mayonnaise from a good one.

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How To Tell If Mayonnaise Has Gone Bad?

This is one of the most essential questions that we will answer. the reason for that is that spoiled mayonnaise can lead to food poisoning which is a serious condition that needs medical attention.

How To Tell If Mayonnaise Has Gone Bad

So, it’s urgent to know how you can know if the condiment has gone bad. here is how:


Take a good and close look at the jar. Introspect it. Does it have any mold or spots that look off? is the color changed from white to brownish-yellow or a darker white? if so, perhaps this mayo is not safe for consumption.


This is one of the most common signs of mayo gone bad. If you open the jar and it smells acidic or rancid, throw it away immediately. This is a sign that there is lactic acid that has accumulated in your mayonnaise, making it really smelling off and not safe to eat.


If it looks good and smells good, there is a good chance it should also taste good. But hold your horses before dipping your favorite food into this mayonnaise. Does it taste like mayonnaise? if it tastes off, maybe you should discard it for your own safety. better safe than sorry indeed.

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Common Questions

Here are some of the most commonly asked questions about mayo:

How Long Is Mayo Good After It Expires

How Long Is Mayo Good After It Expires?

This depends greatly on the company that produced that it. Some companies add a lot of preservatives that can allow the condiment to withstand the test of time for years to come. but you can’t be sure of the labels as they are merely an Estimation.

Check for signs of spoilage. If there are none, I think it’s safe to consume for you.

What Happens If You Eat Expired Mayo?

This is just a bad idea from tip to toe. This is because mayonnaise has plenty of bacteria-prone ingredients that can poison the person if it’s strong enough. It can be as much as causing food poisoning which requires a medical team to handle it.

How Long Does Hellman’s Mayo Last?

According to Hellman’s support team, your mayonnaise is good for around 3 to 4 weeks past the Best-by Date. I would suggest to not wait that long as the quality wouldn’t be Top-notch compared to fresh mayo.

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You can always enjoy your meal by adding mayonnaise to it. but knowing if Mayonnaise Can go bad or not can give you peace of mind while enjoying your tasty sandwich with your favorite condiments. knowing its safe to eat and it hasn’t gone bad.

If you have any questions, simply leave it in the comments and our team will support you by answering your questions ASAP. Thanks for reading, have a great day!

Can Mayonnaise Go Bad

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