Cut very lean Beef into thin strips (mine were roughly 0.25 cm thick)
Marinade overnight.
For the marinade I used....
2 teaspoons of garlic powder
200ml Worcestshire Sauce (sorry if thats spelt wrong
100ml Soy Sauce
I marinaded in the fridge in ziplock bags.
Then in the morning i skewered the beef strips with kebab sticks and let them hang through the grates on the normal oven shelves/grates.
I put the oven on the lowest setting which is about 50 degrees c (fan assisted) and put a teatowel in the door to hold it open a crack to allow moisture to escape and then left it alone, after about 7 hours I had fantastic beef jerky which I am storing in a jar with a little rice in the bottom to suck up any moisture and it should keep for around a year (although it wont last that long as my OH wont stop eating it, I will be hiding the next batch
Obviously it can be kept in air tight packs and it will last alot longer, but you must make sure any fatty bits are taken out and consumed as the fat will go bad.
I will be making some more next week as I have just invested in a food dehyrator and will see how that turns out and I am also going to make some soup by rehydrating the jerky I already made and see how it goes