Mayonnaise is one of the most common condiments in American kitchens, yet its proper storage continues to cause confusion. Some people place the jar in the refrigerator immediately after opening, while others leave it in the pantry or on the counter because commercial mayonnaise contains vinegar, salt, and pasteurized eggs.
So, who is right?
The safest and simplest rule is this: unopened commercial mayonnaise can usually be stored in a cool pantry, but once the container is opened, it should be refrigerated according to the manufacturer’s instructions.
Refrigeration helps
