How to tell if mayo is bad? (+5 tips)

In this brief guide we will address the question, “how to tell if mayo is bad?” as well as other questions pertaining to the subject at hand like how long does mayo take to go bad and how to store mayo. 

How to tell if mayo is bad?

Mayo is a highly acidic food product that does not easily go bad. Having said that, they CAN go bad if proper storage conditions are not maintained or if you leave them out in the open for too long.

There are various indicators that will help you identify if your mayo has gone bad. The signs of spoilage that you should look for. Here are the five tips to tell if your mayo has gone bad. 

Texture

Even though mayonnaise lasts for a good amount of time, you should always look for any loss of texture. This is typically in the form of unevenly spread layers in the jar. 

The liquid starts to accumulate and form another layer on top which can be clearly distinguished when you scoop it out with a spoon and the liquid collects in the hole that the spoon made. This is an immediate sign that your mayo has gone bad and it is now time to throw it away. 

The liquid has an oily appearance that usually can be seen when the mayo is old. The color of mayo also changes.

Color 

Fresh mayo has a creamy white color. If you notice a change in colouration then it indicates that your mayo has gone bad. The color of spoiled mayo is usually pale or yellow.

The discolouration occurs as a result of leaving your mayo out in the open for too long. It is a result of oxidation by the atmospheric oxygen. This color usually appears when you leave the jar opened.

Smell

Fresh mayo has a somewhat sour taste that does not irritate the nose. However, if you notice that the smell is putrid or acidic, it means that your mayo has gone bad. You should throw the jar in the trash if you notice any off odour.

Taste

Well, taste is like your litmus test when it comes to any food product. If you notice a bad or unpleasant taste, it is best to discard your mayo. It simply means that the mayo is either oxidized or contaminated.

Mold growth

Since mayo does indeed have a good moisture content – it is basically a thick liquid, there are greater chances of mold growth. Mold growth can usually be seen at the neck of the jar and is a definite sign that you need to throw that jar in the bin. 

Changing the jar will not help in any way because the contents of your jar have already been contaminated with the mold. The mold will continue to grow even if you change the jar. 

Note that consuming mayo that has been infected with mold can lead to severe food poisoning and health issues. Mold or its spores are usually coloured and can be clearly distinguished from the rest of the contents of the jar.

How long does mayo take to go bad?

Industrial mayo contains preservatives that help to prolong the shelf life of the product. It can last for months when it is stored away from sunlight in a cool and dry place. An unopened jar or pouch of mayo can last upto a year. 

In terms of the “best by” date, mayo can last 2-3 montsh past this date when they are unopened. However, once opened, mayo should be stored in the refrigerator. This will keep the product fresh till its expiry date mentioned on the jar or the container.

Since homemade mayo do not contain any preservatives, they last for only a week in the refrigerator. 

How to properly store mayo?

Refrigerating mayo is a good idea to keep the product in its optimal quality. However, you can also store them at the back of a kitchen cabinet in a cool and dry place. Just keep them away from direct sunlight and sources of heat. 

Generally, it is recommended to store opened mayo in the refrigerator and unopened in a cool and dry place.

Conclusion

In this brief guide we have addressed the question, “How to tell if mayo is bad?” as well as other questions pertaining to the subject at hand like how long does mayo take to go bad and how to properly store mayo.

References

https://www.doesitgobad.com/does-mayonnaise-go-bad/

https://www.canitgobad.net/can-mayonnaise-go-bad/

https://www.ehow.com/info_8252120_signs-mayonnaise-spoiled.html

https://eatdelights.com/mayonnaise-expire/

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Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.

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