How Long Will Dry Ice Keep Ice Cream Frozen
Is Dry out Ice the Best Way to Proceed Coolers Cold?
Past the editors of Cook'south Illustrated
Nosotros were intrigued by turbocharging the "keep food colder, longer" game.
Everyone packs a cooler with the same goal: To keep whatever is inside it as cold equally possible, particularly for long car trips and outdoor festivities on hot days. Leaking ice bags and ice packs that don't stay cold for very long are the bane of a picnic's existence, and so we began to await for better options. Many companies use dry ice to pack items being shipped long distances, then we couldn't assist merely wonder if at that place were a do good to using dry ice instead of regular ice when packing a cooler. In true Cook's Illustrated fashion, we ran a few tests to find out.
THE EXPERIMENT
Nosotros first packed two coolers with various cold items (beer, steaks, and salad greens) and equal weights of ice and dry water ice. We chop-chop ran into a problem: The dry water ice chilled the nutrient and so well that it froze information technology. Pinpointing the exact amount of dry ice that would chill versus freeze food proved difficult since there are so many variables at play (how full the cooler is and the density and temperature of the food, for starters). We decided to alter course and await at how dry ice compares with regular ice in keeping ice cream frozen.
THE RESULTS
Four half-gallons of ice cream stored with 5 pounds of regular ice in a midsize cooler were soupy afterwards three hours, while a similarly packed container kept cold with dry ice took 9 hours to achieve the same state. The dry ice also took upwardly half the space and required no cleanup since, different water-based ice, dry ice (made by cooling and compressing carbon dioxide) changes from a solid to a gas equally the temperature rises and simply dissipates into the air.
THE VERDICT
Nosotros recommend using dry ice with only frozen foods. It's important to have a full cooler when using dry water ice since the rate at which dry out ice disappears is dependent on the amount of empty space in the cooler (using empty covered food-storage containers to fill empty infinite works well). Be sure to follow the retailer'south instructions for how to handle dry out ice.
TESTING FOR MEMBERS: The difference between a skilful cooler and a great ane isn't add-ons like cup holders and telescoping handles. The decisive element is much more than fundamental: air. Non sure what we mean? Read our testing of coolers, where we describe the intricacies of keeping food cold.
Source: https://www.cooksillustrated.com/features/8663-is-dry-ice-the-best-way-to-keep-coolers-cold
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