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What are the alternatives to using refrigerators to keep food cool?
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Other alternatives to keeping food cool include storing food in cool, dark places such as pantries or root cellars, keeping food in insulated coolers, or packing food in ice or snow. In hot climates, placing food in an evaporative cooler can also be effective. Additionally, placing food in air-tight jars or containers and submerging it in a cool body of water can be another option.