Yer, a world apart from many prepackaged meals, whatever you chose. I made some single serves for a recent walk and each on fit in a mini zip lock bag (to fill a 750ml pot)..
I thought I had read something about plastics, I didn't consider metal, think this is similar to the one i had on a list:
http://www.ebay.com.au/itm/EXCALIBUR-9- ... 33605147bcThe Excalibur Dehydrator Quality Materials
* No harmful fumes like low-quality styrene dehydrators
* The polycarbonate is a natural heat insulator, better than single-wall stainless steel
* Virtually indestructible - trays won’t crack or break