Mayo is a creamy emulsion of oil, egg yolks, and vinegar or lemon juice. It is a versatile condiment that can be used in a variety of dishes, from salads to sandwiches to dips. However, like all food products, mayo can go bad. It is important to be able to tell if mayo is bad before consuming it, as eating spoiled mayo can cause food poisoning.
There are a few key signs that can indicate that mayo has gone bad. First, check the color of the mayo. Fresh mayo should be a pale yellow color. If the mayo has turned a darker yellow or brown color, it is likely spoiled. Second, smell the mayo. Fresh mayo should have a slightly tangy smell. If the mayo has a sour or rancid smell, it is likely spoiled. Third, taste the mayo. Fresh mayo should have a creamy, slightly tangy flavor. If the mayo tastes sour or rancid, it is likely spoiled.