Take the mayo label off the jar to get a better look at what’s going on inside.
The “best by” or “use by” date refers to when the mayo has the best flavor or quality. [6] X Research source The number of preservatives in your mayo also plays a factor as the egg yolks used to make the spread are perishable.
Some cooks and homesteaders recommended using homemade mayo within 2 to 3 days of making, while others suggest it can last 7 to 10 days before spoiling.
The changes that happen to mayo after freezing and thawing do not mean it’s gone bad. The acidic ingredients and oil simply separate in a freezing temperature.
