Zuke's genuine jerky is made with up to 91% grass-fed New Zealand beef. It is high in protein, grain-free and has no nitrates or nitrites. Genuine jerky is made from a recipe that contains high-quality, natural ingredients like beef, brown sugar, apple cider vinegar, paprika, onion powder and celery powder. With only natural preservatives, these slices of real beef are perfect anytime treats that can be enjoyed throughout the day, according to the company.