Follow our tips for standing rib roast first timers. •This recipe calls for a 4-rib roast (a full roast has 7 ribs). One rib provides two generous servings. • Ask the grocery store butcher to "french" or trim the meat around the bones. • Roast to an internal temperature of 120º. The roast's temperature continues to rise, ensuring a perfect medium-rare in the center and ends that are more medium to medium-well.