How is Freeze-Dried Food Processed?
Freeze dried foods are seasoned and prepared. They then go through a preserving process known as flash freezing. This process affects the following:
- Water Contents – When foods are flash frozen, about 95% of the moisture contents are removed. Removing so much water reduces the weight of the foods drastically. This is what makes freeze dried products so easy to transport. Removing the moisture also compacts the foods, making them easier to store than some other types of food storage.
- Reduced Weight – How does this work? Well, let’s say a 3kg chicken is flash frozen. Once the process has been completed, this same chicken now weighs only 1kg. In order to eat the products, all you have to do is rehydrate them. Simply add some water, wait about ten minutes, and it’s time to eat.
- Natural Flavors & Textures – It’s also important to note that the preserving process “freezes” both the natural flavors and textures of the foods in place. So, once you’ve dehydrated the products, you’ll find that the meals are as tasty as they were freshly cooked.
- Good Nutritional Value – The preserving process also “freezes” the nutritional value of the foods in place. That means that after being flash frozen, the products still contain the original nutritional content, vitamins, minerals, etc…
- Shelf Life – Freeze dried food products have a shelf life of 25 years.
- Water Contents – According to experts, about 75% of the foods moisture content is removed during the dehydrating process. This is done using a highly sophisticated drying process.
- Reduced Weight – With a large portion of the water content now gone the food weighs much less. It also becomes much compact, making it easy to store and transport. These foods may weigh a bit more than freeze dried products, but they weigh much less than canned foods.
- Shelf Life – There are various types of dehydrated food products. Each has its own shelf life. Generally, though, the shelf life of dehydrated products is between 7-10 years.
How is Dehydrated Food Processed?
Dehydrated foods generally begin as raw, uncooked foods. Then, they go into a special chamber where they go through a dehydration process.
This article was written by Chett Wright, an emergency preparedness expert. Interested in adding food with a 25 year shelf life to your food storage plan? Incorporate freeze-dried food into your plan