Rib roast, also called prime rib, is from the rib section of the forequarter and is a favorite for celebrations and holidays. The ribs encase wonderfully tender, juicy, and flavorful meat that is perfectly marbled and covered with a substantial layer of fat. Large rib roasts include the short ribs and can serve up to 16 people. Smaller ones, such as we suggest for grilling, are trimmed, with the short ribs removed, and are great for four to six people. For the grill, buy a three- or four-rib roast. All the roast needs is a little sliced garlic and salt and pepper. It has enough fat and so requires no olive oil. You will love how a rib roast tastes when grilled, served with a horseradish cream sauce.