Are you a real barbecuer, steak lover or just a beef fan, beware. There is little finer than a U.S. grain-fed rib roast. A whole Angus rib in bone (bone-in prime rib) of no less than 18 pounds. What a thrill. Who dares to challenge this. Your name as bbq'er will forever be set in stone if you are serving this to your guests.