Jack Link's Mega Pack Original Beef Jerky 8 oz Bag Expiration Date Always Fresh Feed your wild side with the taste of the Jack Link's Original Beef Jerky Mega pack. With a full 12 grams of protein and only 80 calories per serving, Jack Link's jerky is the ideal savory bite to fill you up and power you through the rest of a hike, a road trip or a Monday at work. Slow-cooked and hardwood-smoked for the original taste you know and love, Jack Link's Original Jerky is the lean and beefy fuel your cravings are asking for.