I've done it all three ways... well all four..., the first jerky that I ever made was very DIY....I lined a large moving box with foil, and placed the meat on wire racks suspended within... the box was placed on the dining room table. I installed one of those
portable work lights on the end of a cord (minus the aluminum cone and clamp) to hold a light bulb about 6" above the bottom of the box, and used a 75w bulb. I made a hole the size of a mason jar lid in the side of the box next to the bottom, and a second hole in the top of the box, and these I covered with scraps of screen... to allow air flow to carry away the moisture, and to keep out flies and the house cat. So... added the meat, turned on the bulb, closed the box, 24 hours later...jerkey. Not bad tech for 1979.... :shocked2: I have no idea how energy efficient this was or if a lower power bulb would work (can you get plain 75w bulbs anymore?)
The next method I tried a commercial dehydrator... I still use it, four "tray" version... it works fine.
I tried a few large batches in the oven with a rack designed for that purpose...I found that my oven is correct at 170 degrees when set for that, but that the jerkey comes out better if I bake for 6 hours and then turn off the oven and prop the door open about 1/2" for another 4 hours while everything cools. This is best done in Winter, when the extra heat in the house is a good thing. In the summer, you're paying extra $$ to cool the house down while warming up the oven for 6-10 hours.
I've lastly done the over-a-real-fire method. It takes less heat than you realize, so the first pound of meat I did was wrong as it was actually cooked..., so I doubled the height of the rack, and kept the coals low, and the next couple of pounds did very well. Best flavor with the added smoke, that's for sure.
OH and it's pretty simple and good way for you to do a demonstration at a historic site for the public while at the same time adding to your hunting or trekking rations for the future. :wink:
LD