The Action Packed Snack! It's real, and it's spectacular! Perky Jerky is the new high-protein, ultra-premium, functional food for active lifestyles taking the nation by storm. Perky Jerky start with premium all natural beef (no MSG, no nitrates), and add their 7 ingredient marinade, which includes Guarana, a little berry from the Amazon that is commonly found in energy drinks. It's low fat, low carb, low cal and loaded with protein. No preservatives, no sodium nitrates, and no added MSG.