Many chefs recommend cooking prime rib at a high temperature for the first 30 ... for approximately 15 to 20 minutes per pound for rare to medium-rare, and 20 to 25 minutes per pound for medium ...
Set the rib ... oven temperature to 325° and roast for about 2 1/2 hours longer, until an instant-read thermometer inserted in the thickest part of the meat registers 125° for medium-rare.
That’s a cook's goal when preparing a standing beef rib roast ... or until internal temperature reaches 120 degrees for medium-rare. (The temperature will rise during the standing time.) ...
Ask your butcher to French the roast and tie the rib between ... the internal temperature on an instant-read thermometer reads 115 to 120 degrees for rare, 120 to 125 degrees for medium rare ...