Freeze Dry process is entirely new and innovative preservation method which is used not just in your kitchen but even in the pharmaceutical landscape. This is a dehydration process usually used to preserve any perishable material or to make a material much more convenient for carriage. Technically, freeze-drying is known as lyophilization, lyophilisation or cryodesiccation. But really, you don’t have to learn such words to successfully apply this method. Knowing the word freeze-dried foods is just enough.
Generally, there are few ways to freeze dry your foods. You can freeze-dry food using your kitchen refrigerator, dry ice, vacuum chamber or through a more advanced machine that is currently available in the market. No matter what appliance or strategy you use, freeze drying will work in just one way. It’s stated below.
Without further ado, let’s proceed to the freeze drying process.
In freeze drying process, the very first thing you have to do is to flash freeze any food you desire to preserve. What do you mean by flash freeze? It’s freezing the foodstuff or any product quickly at very low temperature. This aims to keep ice from turning crystals which can damage the food cells. Afterwards, you have to remove the moisture or water from the frozen food through sublimation procedure. Here comes the drying process. Basically, there are lots of ways to dry the food but the easiest and most convenient of all is through the use of vacuum chamber.
Now that you’re done drying the foodstuff, the food is ready for storage. Well, you have to look for storage bags specifically designed to store preserved foods. Make sure that the bag is air-tight. It is recommended to use vacuum sealer to protect the storage container or storage bags. Vacuum sealers can ensure you with impeccable air-tightness to keep your food at its top condition
Remember that you don’t have to purchase an expensive appliance just to freeze-dry the food. You don’t also need to attend formal education to comprehend the process. Obviously, Freeze dry process is as easy as 1-2-3. Even a typical man or woman can perfect it!
When you wish to eat the food, all you have to do is drop it in a boiling water. The boiling water will rehydrate your food and get it back into its original state. Worried about its taste? Those food will sure remain as yummy as fresh! Don’t forget to bring this preserved food when you run out with the survival gear at times of emergency or disaster. Or simply bring it when you went out camping or hiking.
What foods can you freeze-dry?
Basically, foods with high water content are the easiest and simplest to freeze-dry. It can be any fruits or veggies such as apples, berries, pears and even peppers, carrots and potatoes. Aside from that common foodstuff fit for freeze-drying, you can also freeze-dry foods such as oats, meat and even pastas. Well, anything within your imagination can be possibly preserved! Just take note that freeze-drying can’t be effective if your goal is to remove chemicals or acids inherent in the foodstuffs. Freeze-drying only eliminates water.