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shelflifeadvice.com/condiments-herbs-spices-spreads/condiments/mayonnaise

Many people eat mayonnaise regularly and never wonder what it’s made of. Others know and are, therefore, afraid to eat it. The main ingredients are raw egg yolks (and sometimes also whole raw eggs), oil, vinegar and/or lemon juice, salt, and sometimes additional spices.

www.eatbydate.com/other/condiments/mayonnaise-shelf-life-expiration-date

How long does mayonnaise last? How long does Miracle Whip last? Unopened mayonnaise will last at least a week beyond a "best by" date, erring on the safe side. The shelf life of mayonnaise regardless of such things as the sell by date, use by date, or best before date is not very long. Mayonnaise, or Mayo for short, despite it's high ...

www.reference.com/food/long-mayonnaise-last-29124086216c5c68

The lengthy shelf life of prepackaged mayonnaise is due in large part to its acidity, pasteurized eggs and preservatives. Investigators have even found these ingredients to impede the growth of salmonella and staphylococcus bacteria in ham and chicken salad made with contaminated meat.

www.finechoicefoods.com/2014/04/shelf-life-of-foods-found-in-refrigerator

An open jar of mayonnaise can last 2 -3 months after being opened if it has been stored correctly. Mayonnaise should always be kept in the refrigerator. Sources vary on the shelf life of unopened mayonnaise with jars lasting from one week to four months past the sell-by date.

stilltasty.com/fooditems/index/17669

How long does an unopened package of mayonnaise last? The precise answer depends to a large extent on storage conditions -to maximize shelf life, store in a cool, dry area. How long does an unopened package of mayonnaise last at room temperature? Properly stored, an unopened package of mayonnaise ...

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

That brings the question: does mayonnaise go bad? Many people think that mayo is very similar in terms of storage and shelf life to ketchup or mustard. There are some similarities, but since mayo contains eggs, there are some significant differences too. In this article, we will go through storage, shelf life, and going bad of mayo.

cooking.stackexchange.com/questions/2746/making-longer-life-homemade-mayonnaise

Making “long(er)-life” homemade mayonnaise. ... Sure, cultured products have a longer shelf life, but you need a stuff in which the good bacteria can multiply easier than the bad bacteria. ... If you're worried about shelf-life of mayo, the concern lies in a store bought, standard white egg.

stilltasty.com/Fooditems/index/17668

The precise answer depends to a large extent on storage conditions - keep opened mayonnaise refrigerated and tightly covered at all times. How long does opened mayonnaise last in the refrigerator? Mayonnaise that has been continuously refrigerated will generally stay at best quality for about 2 to 3 months after the "Best By" date on the package.

www.ochef.com/test_wp/340.htm

Question: What is the shelf life of mayonnaise, once opened and stored in the refrigerator? A while. Actually quite a while. Commercially produced mayonnaise is a lot tougher than most of us think. From the standpoint of safety, you don’t even have to refrigerate an opened jar of mayonnaise because it contains enough vinegar and/or lemon ...

www.myrecipes.com/extracrispy/mayo-unrefrigerated-shelf-life

You might be feeling brave and take a bite anyway, which begs the question. How long can be mayo be left out of the fridge, really? And what's the shelf life of mayonnaise anyway? Well, it really depends on what kind of mayonnaise you've got on hand, but chances are good it's much shorter than you think.