FAst intro to freeze dried/dehydrated food and descriptions of common vegetable, how they reconstitute, weights before and after rehydration, cooking times, etc — stuff seems pricey compared to the below bulk dealer:
http://waltonfeed.com/self/deh-veg.html#intro
Check out Survival Acres.
This site is blowing my mind with the bulk freeze dried food products available … it is like a whole grocery store of already freeze dried bulk food — of all kinds:
http://survivalacres.com/cgi-bin/quikstore.cgi?template=menu&search=yes&keywords=Corn