how long do you leave beef jerky in a dehydrator
y0u don't cook beef jerky in a dehydrator you dehydrate it for 4 - 15 hours usually. Dehydrating is still cooked beef. Beef jerky can be dehydrated in the oven too which is just cooking the jerky until it is dried out enough to be called jerky and be kept for an extended period of time out of refrigeration.I have made jerky for years and have tried both methods. It usually takes about 8 hours.eef jerky can be dehydrated in the oven too which is just cooking the jerky until it is dried out enough to be called jerky and be kept for an extended period of time out of refrigeration. I have made jerky for years and have tried both methods.