what is shelf life of mayonnaise
Store Bought Mayonnaise. An open container of store bought mayonnaise will last between one and three months in the refrigerator. Sources vary widely on the shelf life of unopened, commercially-bottled mayonnaise stored in the pantry -- from one week to four months past the sell-by date. Keep in mind that the date printed on the container refers to how long the mayonnaise will remain at optimum quality, not the date by which it will spoil.
Homemade mayonnaise has a considerably shorter shelf life compared to store bought mayonnaise, as little as two days and up to two weeks. Most recipes for homemade mayonnaise call for raw egg; in addition, homemade mayonnaise lacks the preservatives that contribute to commercially-bottled mayonnaise's longevity. You can substitute pasteurized eggs to minimize the risk of foodborne illness and extend the life of your homemade mayonnaise.