What You Need to Know
Dehydration involves the removal of water from food through methods such as air drying, freeze-drying, and vacuum drying, which inhibits the growth of microorganisms by reducing water activity. This process can be achieved through various techniques, including the application of heat, reduced pressure, or freezing temperatures. The resulting dehydrated products can be stored for extended periods, making them a convenient and shelf-stable option.
Steps
- 1.
Biltong (South Africa): Air-drying creates concentrated meat flavor and shelf-stable protein
- 2.
Dokku (Japan): Sun-drying intensifies umami in fermented fish paste
- 3.
Qawarma (Levant): Preserves lamb fat through slow rendering and drying
The Science
Primary Reaction
Water evaporation or sublimation