Freeze-drying seems to be the perfect method for food preservation to take on trips to the outdoors: is the most lightweight food can be, can be shipped around the world easily, the majority of nutritional value is retained, no preservatives are needed and most important, no energy, no electricity is required to keep it good, and it can last years. Just add water and mix to get kind of a smoothie. Seemingly it should be vastly superior to any other method of food preservation.
Why are other methods still much more popular, and easier to buy such preserved foods:
- soaking in solutions of large amounts of sugar or salt
- high-heat drying
All these above methods seem not as good as freeze-drying, yet they are all much more popular on the market, and freeze-dried food seems to be quite a rare and obscure thing to buy.
There are some freeze-dried powdered fruits and vegetables on the market, but few and far in between, there is infinitely more vendors selling canned fruits and vegetables, which are heavy, don't last as long, and are often loaded with added sugar.
It's even more rare to find freeze-dried meat or fish for sale, but you can buy canned sardine almost everywhere. Canned food seems to be the most popular preserved food to take on hiking trips without cooking facilities.
Freeze-dried milk is kinda available, but also mostly for speciality milk like camel milk, normal cow milk is mostly heat spray dried, which not only doesn't have as much water removed so it doesn't last as long, but also the heat used damages some vitamins, so freeze-dried would be more nutritious and healthy.
You can buy an expensive freeze-drier and do it yourself at home, but given all the amazing benefits of freeze-dried foods, and almost no difference compared to fresh when making a smoothie, I find it strange commercial-made freeze-dried food is relatively rare to find for sale.
One might say that the canned version more resembles the original fruit or vegetable, but blenders and smoothies are very popular, so why not freeze-dried food?
The high cost of freeze-drying and thus the final price of the food being too high could be the reason, but there a lot of food intended as pet food sold freeze-dried. One usually have a higher acceptable price for food for their pets then themselves, so if the economy works for pet food, it should work for human food too. Actually the majority of freeze-dried food for sale online is pet food (although some of it could be fine to eat as humans too).
What is wrong with freeze-dried food, what is the reason it is not much more popular then it is, resulting in poor choice and very small amount of vendors selling it?