Prime rib roast is a cut of meat that can hold between 2 and 7 cow ribs. It is one of the 8 basic cuts of bison/beef. When sliced, it will form several rib eye steaks. Prime rib roast is most commonly seasoned with a meat rub and dry roasted in an oven or grill. This recipe can be used to barbecue a prime rib roast of any size.
Insert a meat thermometer into the roast and allow it to cook for 25 minutes per lb. Remove the roast from the grill when the meat thermometer reads 130 degrees F for rare or 150 degrees F for medium well. Move the prime rib roast directly to a cutting board and cover with aluminum foil. The internal temperature of the meat will increase an additional 10 degrees while under the foil.