Aging beef allows it to tenderize through natural processes, the longer the aging the more tender it becomes. Sun Prairie Natural Beef is dry-aged – hung as sides, free standing, in a controlled, refrigerated environment for a minimum of 14 days. This is contrary to the now industry standard 5-day ‘wet-aging’ process where the sides of beef sit wrapped in plastic bags, often transported via truck from slaughterhouse to butchering facility.