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The Procedure for Freeze-Drying Food

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These foods are merely washed with sprays of water. Some veggies, like peas and corn, are quickly scalded, or blanched, before freezing. Espresso is obtained as a pre-brewed concentrated liquid. Because the scent of espresso is essential to consumers, a little bit of beans oil may be included with the liquid. Unlike the water, the oil isn't removed throughout the drying process. Survival Food Kits

The foodstuff parts are spread out on flat, metal containers which are loaded 20 to 30 saturated in slots in a wheeled cart. With food that's been pre-cooked and frozen, the containers are pre-chilled to stop partial thawing throughout handling. With fluids like coffee, the pre-brewed espresso is mixed into shallow pans. The carts are wheeled right into a big, walk-in coldroom where in fact the heat is as reduced as -40F (-40C). In that excessively cool temperature, the food is quickly frozen. You can find frequently several or even more coldrooms in operation, and the carts are kept there till it's time to move them in to the drying chamber.

The carts are wheeled out from the coldroom and into a cleaner drying chamber. In the case of drinks like espresso, the frozen espresso is first surface up into little contaminants in a low-temperature grinder. The drying chamber is a large, long, outside tube with semi-elliptical ends. One conclusion is hinged to open and close. When the trays of freezing food parts are inside, the chamber is closed and sealed. In a big plant, there may be 20 to 30 drying chambers functioning at any time.



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