LOL. I just looked it up and got MANY hits. Here's one: http://www.ehow.com/how_2058773_pres...hydration.html

I too set the oven at 200 when I've done this and did NOT leave the oven door open so I guess I did it wrong and am lucky they didn't get mold, LOL. (This is actually mentioned in several of the other links too!) Maybe it's because they were never around long enough to contract anything, LOL. Didn't do any of the other things like boil them, either. They were still delish!

I was actually spurred to do this when I bought a convection/toaster oven and saw in the instructions that one of the things you could do via the convection setting is dehydrate just about anything. That said, I have never used that appliance to dehydrate anything!