Mayonnaise Spoilage Myths and Safety: Does it go bad? How long does it last?
Commercially made mayonnaise has a bad reputation as a cause of food poisoning.The ingredients in commercially made mayo may help keep the sandwich fresh.You need to be careful with homemade mayonnaise.
It is usually cross-contamination from the other ingredients that cause the illness, like the chicken in a chicken salad.
Mayonnaise at its most basic is made of oil, egg yolk, and an acid such as lemon juice, but have you ever read the ingredient list on a jar of mayo?Acid and Preservatives can extend the life of jarred mayonnaise by killingbacteria.Pasteurized eggs are used to make mayonnaise.
A study published in the Journal of Food Protection found that when mayonnaise was mixed with chicken and ham, it slowed the growth ofbacteria.
If it's not handled properly, homemade mayonnaise carries more risk.Traditional homemade mayonnaise contains raw egg yolks that are usually from eggs that have not been Pasteurized, so foods that contain homemade mayo should be eaten immediately or properly refrigerated.Don't plan on leftovers and only make up the amount of mayonnaise you need.When refrigerated, homemade mayonnaise can last up to 4 days.