FD/SLOWROAST  Washington Post Studio  DATE:  January 2, 2007  PHOTO:  Julia Ewan/TWP  CAPTION:  Slow roasted Prime Rib Roast of Beef (top) and Boneless Beef Shoulder Roast (bottom).
Food - Drink
The Ideal Roasting Temperature For Tender Prime Rib
By MEGGAN ROBINSON
Prime rib roast comes from the rib's primal cut, which is exceptionally tender, second only to tenderloin, and it is described as a large cut of excellent beef. Prepping a prime rib roast is pretty simple, and it is recommended to remove it from the refrigerator about three hours before it needs to go into the oven.
Before roasting, season it properly and oven-sear the prime rib at a very high temperature of 500 degrees Fahrenheit, but only for 15 minutes. Once the roast is beautifully browned, drop the oven temperature to 350 degrees Fahrenheit and cook until it reaches the desired doneness.
Prime rib is best served medium-rare for optimal tenderness, so cook it until it reaches 120-135 degrees Fahrenheit, but if rare is preferred, 115 degrees Fahrenheit is recommended. Use the meat thermometer to ensure it has reached the ideal temperature, and once roasted, allow time for the prime rib roast to rest before slicing and serving it.