Beef jerky is a keto-friendly, low calorie and high-protein snack that’s easy to pack, eat and travel with. But all beef jerky is not created equal. Skip the usual options in favor of premium, 100% filet mignon Three Jerks Original Beef Jerky. This old school jerky flavor hits all the right notes of salty, sweet and tangy with just the right amount of black pepper to round it out. What’s more, because it’s made with only tender filets that have been marinated to perfection, you’ll get that perfect jerky texture on every piece that comes out of the bag.