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Do you need to refrigerate the following items after they have been opened: ketchup, mustard, jelly, chocolate syrup and peanut butter?

All manufacturers of commercially produced foods are required to state on the product label if it must be refrigerated after opening for food safety reasons, and restaurants are required to follow the manufacturer’s instructions, said Marilyn Teeter, environmental health specialist with the Lawrence-Douglas County Health Department. “I imagine that different types and/or brands of these foods may have different requirements, based on what ingredients are in them. For instance, plain yellow mustard made with water, vinegar and powdered mustard seeds probably lasts forever at any temperature, but specialty mustards with additional ingredients such as mayonnaise, raspberries and whatnot might need to be refrigerated,” she said.


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