Mayonnaise—need we say more? This creamy staple is a key ingredient in Southern kitchens, starring in everything from potato salad and deviled eggs to pineapple sandwiches. But mayonnaise can be tricky when it comes to shelf life. If you've ever found a near-empty jar in the back of your fridge and wondered if it was still safe to use, here's how to tell if it needs to be discarded, along with tips to keep your jar of mayo fresh for longer.
The good news is that opened mayonnaise can last quite a while. Store-bought mayo, with preservatives to extend its shelf life, can last for two to three months in the refrigerator after opening. Always check the label for any specific guidance—certain brands and types may last longer than others.
On the other hand, homemade mayonnaise spoils much more quickly, and should be used within three to five days for the freshest flavor and texture. Keep refrigerated when not using.
You've probably noticed a few different dates printed on food packaging, and you might have wondered what they really mean. Understanding the difference between sell-by, best-by, and use-by dates can help you determine when it's best to enjoy your mayonnaise by:
While these dates are important to keep in mind, mayonnaise that hasn't been opened or isn't showing any signs of spoilage can be enjoyed past these dates.
When storing an opened jar of mayonnaise, keep these tips in mind to keep it as fresh as possible:
Caitlin Bensel; Food Stylist: Torie Cox
If you notice any of these signs of spoilage, it's safest to discard your mayo to avoid the risk of foodborne illness:
While you could just slather it on some bread and make sandwiches, here are some other creative ways to make good use of this kitchen staple, particularly if you want to use it up in a hurry:
