Choosing the Right Freeze DryerĪ freeze dryer is not an appliance most Americans spend money on, so if you’re looking to purchase a freeze dryer to preserve raw eggs (or any other type of food) be sure you go with a model that fits your needs. In theory you can freeze dry food simply by leaving in your freezer, uncovered for a long period of time, but this wouldn’t really be practical for a tray of eggs. The freeze dryer will get so cold it will sublimate all the water in your food-meaning the water will go straight to a vapor rather than becoming liquid again before it evaporates. In order to freeze dry food efficiently you will need a special piece of equipment made for freeze drying. Freeze drying can be a good way to preserve the taste of a food over simple dehydration and almost any type of food can be freeze dried.Ī freeze dryer is not something that is practical to “jerry-rig” at home. As the food is warmed all the moisture is sucked out under the pressure of a strong vacuum. After the food is frozen the food is gradually and very gently warmed back up. For the Harvest Right freeze dryer, which is the type I use, the food is frozen to between -30 and -50 degrees Fahrenheit.
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