How Long does Homemade Mayonnaise Last in the Refrigerator?

If you’ve made your mayonnaise, you’re probably wondering how long it will last in the refrigerator. In this article, we’ll talk about the key factors that determine how long homemade mayonnaise will stay fresh.

You may be wondering whether it is possible to freeze homemade mayonnaise. The answer is yes, but there are some tradeoffs. Freezing mayonnaise will extend its shelf life, but it is not the best way to store it. When freezing, the process causes the ingredients to break down and deteriorate. This means that the texture of your mayonnaise will be changed, and it will not taste the same. It also makes it easier for bacteria to grow.


What is Mayonnaise?

Mayonnaise is a rich, creamy condiment or dressing that is made with oil, egg yolks, vinegar or lemon juice, and seasonings. Conversely, salad dressing is typically sweeter than mayonnaise and does not contain egg yolks.

A mayonnaise emulsion combines two liquids that ordinarily wouldn’t mix. The standard illustration is mixing water and oil. Tiny droplets of one liquid disperse and suspend in another after being emulsified by gently adding one ingredient to another while quickly combining the two.

The two liquids will swiftly separate once more if an emulsifier is not added. Emulsifiers stabilize the combination by serving as a conduit between the two liquids. Eggs and gelatin are two examples of foods that contain emulsifiers. Lecithin, a fat emulsifier found in egg yolks, is used in mayonnaise.

Colloids, or heterogeneous combinations of small particles suspended in another immiscible (unmixable) substance, are known as emulsions. These particles are larger than molecules yet have a diameter of only one-thousandth of a millimeter (.001mm).

Since they are so little, they do not settle and will travel through the filter paper. Colloid particles can be suspended in a solid, liquid, or gaseous media and made of solid, liquid, or gaseous bubbles (although gas colloids cannot be suspended in gas).

How Long does Homemade Mayonnaise Last in the Refrigerator?

In the refrigerator, homemade mayonnaise can be stored for up to three months. It’s vital to remember that freezing could alter the mayonnaise’s texture and consistency, so it’s preferable to use it in cooked or blended foods as opposed to as a condiment. The mayonnaise must be kept in an airtight container before freezing to avoid freezer burn, and it must thaw in the fridge before use.

If you’ve got your homemade mayo in the refrigerator, it’s a good idea to check it out periodically. The most common sign of spoilage is the presence of mold. It can develop in several areas, including the lid and neck of the jar. But it can also occur in the liquid itself. When you get this type of mayo, it’s best to wash the jar with a dry paper towel.

What is the Correct Method of Freezing Mayonnaise?

To freeze mayonnaise, do the following:

  • Into a spotless, sealed container, scoop the mayonnaise. To allow for expansion while freezing, leave about 1/2 inch of headroom at the top of the container.
  • Use a lid or plastic wrap to close the container tightly.
  • Before putting the container in the freezer, write the date and contents on the label.
  • Put the mayonnaise container in the freezer’s coldest section.
  • At 0°F (-18°C) or lower, mayonnaise will freeze.
  • The containers can be stacked once frozen to maximize space.

Use the mayonnaise within 3 to 4 months after thawing it in the refrigerator when you are ready to use it. It’s recommended to use mayonnaise in cooked or blended foods rather than as a condiment because freezing may alter its texture and consistency.

What is the Right Method of Defrosting Frozen Mayonnaise?

These are the measures you can take to thaw mayonnaise:

  • Remove the mayonnaise jar from the freezer and put it in the fridge.
  • Keep the mayonnaise container in the fridge until it has fully defrosted. Depending on the size of the container, this could take 8 to 12 hours.
  • Before using the mayonnaise, give it a good toss after it has frozen to distribute any separated oils evenly.

Don’t let mayonnaise defrost at room temperature. Because of this, the safety of the mayonnaise may be jeopardized. Additionally, it must be put to use within 3 to 4 months of defrosting.

How to Store Mayonnaise?

To store mayonnaise, take the following actions:

  • The mayonnaise should either be kept in the original container or moved to a fresh, sealed one. Ensure the lid, sides, and any remaining mayonnaise are clean.
  • Keep the mayonnaise from sources of intense light and heat in a cold, dry area. Mayonnaise should be kept between 32 and 40 degrees Fahrenheit (0 and 4 degrees Celsius).
  • Because it can absorb flavors and keep mayonnaise away from dishes with strong flavors.
  • Always use mayonnaise before it expires by checking the container’s expiration date. You should consume homemade mayonnaise within 3 to 4 days.
  • Mayonnaise can be stored in the refrigerator for two to three months after opening if it has been stored at the proper temperature and hasn’t been contaminated with anything foreign.

Throw it out immediately if you spot any symptoms of deterioration, like mold, an unpleasant odor, or a color change.

You can guarantee that your mayonnaise stays tasty and fresh by following these instructions.

What Flavor does Mayonnaise have?

Mayonnaise is a creamy, tart dressing that has various applications. This can be a tasty sauce to make crispy chicken fingers healthier without adding fat or as a foundation for dips and salad dressing. While all our tasters agreed that this mayonnaise had flavor, some felt it was lackluster.

It only had slightly more mustard flavor than other brands; it was mild and clean. All tasters found the texture generally pleasing, ranging from custardy to slightly creamier.

How can Mayonnaise be Used in Cooking?

Mayonnaise is often created using egg, oil, vinegar, or lemon juice to give it its recognizable “creamy” consistency. This emulsion stays together when cooked for a long time at low temperatures because the molecules in it are too big to be separated by heat.

Among the frequent uses are:

  • Homemade fries with mayonnaise on top.
  • As a thickening in chicken soup and mashed potatoes.
  • To thicken sauces, gravies, stews, and soups (add soon before serving to prevent curdling).
  • Additionally, you can bind ground meats with mayonnaise. Because it is less likely to overcook when used in high-heat cooking techniques like grilling or frying, some people prefer it to eggs.

When using mayonnaise as an egg substitute, flavor the mixture by adding pesto, curry paste, horseradish sauce, jerk sauce, barbecue sauce, or hot pepper jelly before incorporating the remaining components.

Are Mayonnaise and Mayo Distinct from One Another?

The difference between mayo and mayonnaise, a salad and sandwich dressing produced from vegetable oil, raw egg yolks, and spices, is that mayo is (short for) mayonnaise. It is misleading to refer to it as “genuine” mayonnaise and to imply that other types of mayonnaise are “fake” because mayonnaise is primarily an emulsion of oil and eggs with a few herbs and other flavorings. A product must have at least 65 percent vegetable oil, egg yolk, vinegar, and lemon or lime juice to be categorized as mayonnaise in the US.

There are numerous well-known mayonnaise brands available, but just a few stand out. You already have the ingredients in your pantry to make this vegan mayonnaise. Apple cider vinegar, dijon mustard (or dried mustard powder), sugar, salt, pepper, and a dash of turmeric for color are combined with soaked cashews.

How to Identify Whether Mayonnaise has Gone Bad?

There are a few indicators that the mayonnaise is off. Even though mayonnaise has a long shelf life, it doesn’t take long to become unhealthy. If you’re unsure if your mayonnaise is safe, throw it away as soon as it begins to smell or change color. It will smell sour and vinegary when it is rotten.

The easiest and most reliable technique is to look at the jar’s best-before date. Relying on this, though, is not always advantageous.

Do a sniff test and pay close attention because it’s conceivable that unsealed jars of mayo have been left out for hours or overnight before being put back in the refrigerator.

The good news is that there are clear signs that anything is amiss with your mayonnaise.

Spores and Molds

Spores in your mayonnaise or mold around the jar neck are definite signs that something is amiss with the food, so you should throw it out straight away.

Additionally, never think of changing the container because doing so won’t stop the mayo from becoming bad. Tossing it out is safer!


Another technique to tell if your mayo is already rancid is to sniff it. Poor mayonnaise typically has an unpleasant or rather acidic smell when opening the bottle. Don’t eat your mayonnaise if it is already in this state.


The simplest approach to tell whether something is amiss with your mayonnaise is to look at its appearance. Mayonnaise that has gone bad is typically yellow or brownish rather than white. Additionally, you’ll see that the poor mayo lacks a creamy texture and has a thin layer of liquid on top of it.

The mayonnaise may have been frozen and thawed, which would also explain the separation.

Taste It’s conceivable that you won’t always be able to tell if your mayo is bad by using your senses of smell and sight. A taste test is necessary if that is the case.

After whisking the mayonnaise with a clean kitchen spoon, give it a gentle taste. You should toss your mayonnaise if it tastes sour or “off,” as this is a warning sign.

What are the Harmful Effects of Consuming Mayonnaise?

Food poisoning, which can result from consuming rotten mayonnaise, can produce several symptoms, including:

  • Nausea and diarrhea
  • Diarrhea
  • Stomach pain
  • Headache
  • Fatigue
  • Reduced appetite
  • Fever

After swallowing rancid mayonnaise, these symptoms can appear from a few hours to a few days and linger for a few days.

Additionally, bad bacteria like Salmonella, Listeria, and E. coli can lead to serious sickness, and in some cases, even death can be found in rotten mayonnaise. For some people, including pregnant women, young children, the elderly, and those with compromised immune systems, these germs can be very harmful.

Always check the mayonnaise’s expiration date on the container to ensure that you consume it before it goes bad. It would be best if you also threw away any mayonnaise that shows any signs of spoiling, such as mold, an off-odor, or a color change.

Reference: Ohmically extracted Zenyan essential oils as natural antioxidants in mayonnaise.

In this work, Zenyan was used to extract essential oils (EOs) using both traditional hydrodistillation (HD) and Ohmic aided hydro distillation (OAHD), and the extraction parameters and extracted oil were compared.

Different formulations of mayonnaise were held at 38°C, and BHA and BHT were used to examine the oxidative stability and sensory effects of the sauce created with various amounts of EO (0.015%, 0.03%, and 0.045%) derived via OAHD and HD.

Compared to BHA and BHT, mayonnaise quality metrics revealed that all EO doses had an antioxidant impact. The most stable during storage were those with EOs added at 0.045%. Additionally, EOs lowered the stable free radical 2, 2-diphenyl-1-picrylhydrazyl (DPPH) to an approximate 50% inhibitory concentration (IC50) of 25 g/mL.


If you’re making homemade mayonnaise, ensure you don’t store it in a humid place. Humidity can cause problems with water damage. Especially during the summer, humidity can feel uncomfortable. It can also trigger COPD flare-ups, which can worsen symptoms.

To avoid storing your homemade mayonnaise in a place that is humid, you can either put it in the refrigerator or store it in the freezer. You can also use a plastic container with a tight-fitting cap to avoid the oil from leaking. This helps keep the mayonnaise fresh for up to a week.