While prime rib can be sold bone-in or boneless, a bone-in roast is the best bet for guaranteed juicy succulence. A good rule of thumb for purchasing bone-in prime rib is to buy one pound per person.
The best joints for roast beef are a Rib of Beef, Sirloin or Fillet. Rib - better even, Prime Rib - works well, as it will be cooked on the bone. Keeping the bone in makes for a tastier piece of ...