The short answer is probably no, I did some research on it (the same research you or anyone else can do, I don’t have access to any special info), I had hoped it would be something that could be done, but I can’t see a way to do it. Yes, the moisture does have to have somewhere to go, quite frankly, without major equipment that most of us don’t have access to, nor could the average person afford it if you could access it, it’s just not feasible.
I wrote an article on it,
https://offgriddev.wpengine.com/2011/02/21/freeze-dried-vs-dehydrated-foods/
You might be especially interested in the comments on that article. Now, if you, or anyone else, figures out a way for the average (or even the not so average) person to do this, please post a message about it, it is something that I would be greatly interested in. 
Wretha
