[pct-l] Dehydrating/Freeze dried

[Ed Jarrett]

No heat is involved.  Commercially it is done by flash freezing and then subjecting to a vacuum.  At home you just let the freezer suck out any moisture over time.

Ed Jarrett Blog: http://aclayjar.blogspot.com/  Twitter: https://twitter.com/EdJarrett53 Facebook: https://www.facebook.com/ed.jarrett.71 

> From: diane at santabarbarahikes.com
> Date: Thu, 18 Apr 2013 17:27:42 -0700
> To: pct-l at backcountry.net
> Subject: Re: [pct-l] Dehydrating/Freeze dried
> 
> I think I read somewhere that it is frozen, then heated to stimulate  
> the release of water, then frozen again etc etc. They do this very  
> quickly using a heated surface and extremely low temperatures.
> 
> On Apr 18, 2013, at 10:00 AM, pct-l-request at backcountry.net wrote:
> 
> > From: surferskir at aol.com
> > Subject: [pct-l] Dehydrating/Freeze dried
> > To: pct-l at backcountry.net
> >
> >
> > I am an avid at-home dehydrator.  I love taking different dried  
> > foods on the trail.
> > However, many of the things that I see in the sporting stores are  
> > 'FREEZE DRIED".
> >
> > How do they freeze dry foods?  What is the process(es)?  Is it  
> > something that one could do at home?
> >
> > --Dennis--
> 
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