15 Ingredients You Should Never Store in Your Fridge

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What? Yep. The vinegar and salt in ketchup act as preservatives. So unless you actually like your condiment cold (cold squirts on warm hamburgers, hot dogs, and fries?), keep your ketchup in the kitchen cabinets. And while we're at it, let's skip the grocery store condiment aisle with all its unnatural preservatives, and make our own ketchup.