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How Long Does Mayonnaise Last? Does it Go Bad?

It’s that time of year where so many people are making their own mayonnaise.

But just like anything else, mayonnaise can go bad over time. How long does mayonnaise last?

Did you know that the lactic acid in mayonnaise can cause it to spoil? And if it goes bad, what are some ways to tell?

In this article, we will answer all of your questions about how long one mightonnaise lasts, how to make sure it doesn’t go bad, and more.

What’s Mayonnaise?

Mayonnaise is a popular condiment for sandwiches, salads and other foods.

It is made of eggs, oil, vinegar or lemon juice and sometimes mustard and salt.

The exact ingredients vary between brands but the traditional version contains a few key ingredients – egg yolks, oil, acidity (vinegar or lemon juice) and seasoning such as pepper.

Mayonnaise can also come in flavors such as garlic and horseradish.

Traditionally it is thought of as a creamy white sauce but it can also be yellow depending on the acidity present in the recipe.

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It has a silky texture and can be used to jazz up many dishes – from sandwiches to pasta salads.

How to Store Mayonnaise?

Mayonnaise is one of those ingredients that seems to be in everything.

From salads and sandwiches to dips and sauces, mayo has a variety of uses.

But how long does mayonnaise last? And what’s the best way to store it?

Mayonnaise is made with eggs, oil, vinegar, and lemon juice.

The combination of these ingredients gives mayo its thick, creamy texture.

Mayo can last for up to two months in the fridge if it’s stored properly.

That means keeping it in a sealed container at 40 degrees Fahrenheit or below.

Once opened, mayonnaise should be used within two weeks.

If you’re not sure how long your mayo has been sitting in the fridge, it’s always better to err on the side of caution and throw it out.

So there you have it. Now you know how to store mayonnaise so that it stays fresh and delicious.

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How Long Does Mayonnaise Last?

Mayonnaise is a versatile condiment with a wide variety of uses, from sandwich spreads to salad dressings.

Its creamy texture and distinct flavor make it popular among many households.

When properly stored, mayonnaise typically stays fresh anywhere between two to three months if left unopened.

This can extend to up to four months if kept refrigerated.

If the mayonnaise is opened, its shelf life is much shorter at around one month in the refrigerator before becoming unsafe to eat.

To determine whether your container of mayo is still good for consumption, do an odor test: open the lid and take a good whiff – if it smells unpleasant or off in any way, then it’s best to discard the jar immediately.

Most importantly, always check expiration dates and store perishable items like mayonnaise appropriately by keeping them tightly sealed and refrigerated when not in use.

Can You Freeze Mayonnaise?

Can you freeze mayonnaise? The answer is technically yes, but there are some things you should know before you do.

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Mayonnaise is an emulsion of egg yolks, oil, and either vinegar or lemon juice.

This combination can make it tricky to freeze and thaw without affecting the texture or flavor.

If you do choose to freeze mayonnaise, be sure to use it within two months for the best quality.

When freezing mayonnaise, place it in a freezer-safe container.

Leave about ½ inch of headspace at the top of the container to allow for expansion during freezing.

Once frozen, mayonnaise will last for up to two months.

To thaw, transfer the frozen mayonnaise to the refrigerator and allow it to thaw overnight.

Once thawed, Mayonnaise can be stored in the refrigerator for up to two weeks.

Be sure to stir well before using, as the texture and flavor may be affected by freezing and thawing.

How to Tell If Mayonnaise is Bad?

If you’re not sure whether or not your mayonnaise has gone bad, there are a few things you can look for.

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First, check the expiration date on the jar or container.

If it’s past that date, the mayo is probably no longer good.

Another way to tell if mayonnaise has gone bad is by its color and texture.

Fresh mayo is white or pale yellow, and it should be smooth and creamy.

If the mayo has changed color or is lumpy, it’s probably time to toss it.

Finally, give the mayonnaise a sniff. If it smells sour or off, it’s not good anymore.

If you’re unsure whether or not your mayonnaise is still good, err on the side of caution and throw it out.

It’s better to be safe than sorry when it comes to food safety.


While mayonnaise is a relatively shelf-stable product, it can eventually go bad.

Once opened, mayo will last three to four months in the fridge before starting to spoil.

Signs that your mayo has gone bad include an off odor, changed color, or mold growth.

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If you notice any of these signs, it’s time to toss the jar and buy a new one.

Remember to keep an eye on expiration dates and always store mayonnaise in the fridge for best results.

Yield: 1 Serving

How Long Does Mayonnaise Last? Does it Go Bad?

How Long Does Mayonnaise Last? Does it Go Bad?
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes


  • Mayonnaise
  • Air-tight containers or Ziplock bags
  • Labels and markers


  1. Store your product in an labelled container in a cool, dark place like the pantry or fridge.
  2. If your food is frozen, allow it to thaw in the fridge before cooking.
  3. Make sure to look for signs that your food has gone bad before eating it.
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