Then, a couple of French inventors created a technique that involved heating and compressing foods. In the middle ages, Europeans began constructing buildings designed for food dehydration purposes. The first method used to dehydrate food relied on the sun’s heat. Since at least 12,000 BCE, people have experimented with a variety of food dehydration methods. In fact, the history of dehydrated foods dates back to ancient Egypt. Dehydration as a method of food preservation is nothing new.
