Grilled Prime Ribs of Beef with Garlic and Rosemary

If you’re like most people (including me), you’re probably intimidated by the prospect of cooking a standing rib roast. Who wouldn’t be? A prime rib represents a formidable piece of meat for even the most seasoned chef: an eighteen-pound mass of beef and bones that literally takes both hands to lift. It’s also expensive—a seven-rib roast can cost upward of $150. Well, be intimidated no more, because here’s an easy, virtually foolproof method for cooking perfect, crusty on the outside, melti