Which Condiments Should <br />Be Refrigerated? Here's a handy refresher on <br />condiments and refrigeration. Although ketchup is too acidic for bacteria <br />to grow, popular brands like Heinz aren't. <br />Always refrigerate it just to be safe. Refrigerating mustard can extend its shelf-life for up to a year. Mayonnaise contains eggs, <br />so it must be refrigerated <br />to prevent bacteria growth. Jams and jellies don't need <br />to be refrigerated if they'll <br />be used within a month. Butter can stay out of the fridge <br />if it's consumed within 10 days. Always refrigerate salad dressing <br />or it could turn rancid.
