Meat. It's been fuel all the way back to ancient civilizations. If it worked way back then, it will definitely work for you to power thru whatever challenge comes at you in modern times. Jack Link's Beef Jerky is made from lean cuts of 100% premium beef, then seasoned with simple ingredients like salt and water. It's 96% fat free, and always hardwood smoked and slow cooked, resulting in a tender, delicious beef snack. Try all our delicious flavors, you won't be disappointed.