Who discovered food dehydration?

Question

Who discovered food dehydration?

Answer 1

Food preservation has been around for a long time.  During th Roman empire, they salted meats and other foods to preserve them.  Freeze drying was invented only during the last 100 years or so.  Clarence Birdseye invented a process of quick freezing seafood to make them last and taste better in the 1920s.  

Answer 2

cavemen.  It is the only way to store food without threat of flies and rot.