Refrigerate or Leave Out? The Truth About Mayonnaise Storage

is more stable than many people assume. Made with pasteurized eggs and preserved with acid, it is designed to resist bacterial growth. However, “safer” doesn’t mean completely risk-free. Once opened, each use introduces new variables. A utensil that has touched other foods, contact with unclean surfaces, or exposure to warm air can introduce contaminants. Mayonnaise is meant to handle occasional exposure—not ongoing neglect.

 

 

Temperature plays a key role in

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keeping it