But remember that mayonnaise, like a lot of other condiments, usually has a best by date and not a use by date or expiration date. Because of this distinction, you may safely use mayonnaise to compliment your favorite meals or snacks for a short time after the best before date has lapsed.

How to tell if Mayonnaise is bad, rotten or spoiled?

Practicing proper hygiene and food safety techniques will help prevent foodborne illness.

Mayonnaise will begin to look a little more yellow instead of its normal creamy white color and then will get thicker and lumpy over time as it ages. Always discard the entire container if any mold (mould) is visible. With mayonnaise the advice is - when in doubt, throw it out! There are health risks with consuming bad or spoiled mayonnaise.

There are, of course, certain health risks associated with spoiled foods so always remember to practice food safety and enjoy your foods before their shelf life has expired!

How to store Mayonnaise to extend its shelf life?

Refrigerate mayonnaise right after opening and keep it there all the time, except for the brief time to spread it on your sandwich of course.

Some benefits of proper food storage include eating healthier, cutting food costs and helping the environment by avoiding waste.

How long is Mayonnaise good for when prepared in a dish?

How long does mayonnaise last? That depends. How long does bread last? In general, mayonnaise will be the quickest spoiling item that you will probably put in a dish. So, serve the macaroni or potato salad and then return it to the refrigerator as soon as possible and then consume the leftovers within 2 -3 days. If you had the dish sit out at a picnic, we recommend just tossing the leftovers while packing up to go home.

What are our shelf life resources?

In determining how long Mayonnaise lasts, our content incorporates research from multiple resources, including the United States Department of Agriculture and the United States Food & Drug Administration. In addition, we scoured the web for informative articles and reports related to food safety, food storage and the shelf life of Mayonnaise.

*An important note about expiration dates...

Although the Mayonnaise shelf life information on Eat By Date is generally reliable, please remember that individual cases will vary and that our advice should only be taken as an opinion and not a replacement for your health care professional. Please eat responsibly!