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  2. Freezer burn - Wikipedia

    en.wikipedia.org/wiki/Freezer_burn

    Freezer burn appears as grayish-brown leathery spots on frozen food and occurs when air reaches the food's surface and dries the product. Color changes result from chemical changes in the food's pigment. Freezer burn does not make the food unsafe; it merely causes dry spots in foods. [2] The food remains usable and edible, but removing the ...

  3. Thermal bag - Wikipedia

    en.wikipedia.org/wiki/Thermal_bag

    A thermal bag is a type of thermally insulated shipping container in the form of a bag which can be carried, usually made of thermally insulating materials and sometimes a refrigerant gel. It is used to help maintain the temperature of its contents, keeping cold items cold, and hot items hot.

  4. Vacuum packing - Wikipedia

    en.wikipedia.org/wiki/Vacuum_packing

    When foods are frozen without preparation, freezer burn can occur. [citation needed] It happens when the surface of the food is dehydrated, and this leads to a dried and leathery appearance. Freezer burn also changes the flavor and texture of foods. Vacuum packing reduces freezer burn by preventing the food from exposure to the cold, dry air.

  5. 25 Foods You Should Never, Ever Freeze (and Why) - AOL

    www.aol.com/finance/25-foods-never-ever-freeze...

    21. Cakes. Cakes adorned with delicate frostings or fillings, such as whipped cream or fruit compotes, can undergo unfavorable changes when frozen.

  6. Ice pack - Wikipedia

    en.wikipedia.org/wiki/Ice_pack

    An instant cold pack is a single-use device that consists of two bags; one containing water, inside a bag containing ammonium nitrate, calcium ammonium nitrate or urea. When the inner bag of water is broken by squeezing the package, it dissolves the solid in an endothermic process. This process absorbs heat from the surroundings, quickly ...

  7. 15 Foods You Should Buy When They're on Sale - AOL

    www.aol.com/finance/15-foods-buy-theyre-sale...

    Keep an eye out for sales, download apps like Flipp to spot deals, and stock up on foods with a decent shelf life or that freeze well. To help, here are 15 foods you should always buy on sale ...

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