Bar 10 Beef is All Natural, Grass-Fed Beef. It is dry-aged on average 21 days, resulting in a healthy, delicious, gourmet product that is USDA inspected. This is beef that you would only find at a gourmet restaurant or custom butcher shop; it is not available at your local grocery store. Our cattle are never given additional antibiotics or growth- promoting hormones and are raised in a humane and safe environment.