Preheat oven to 500 degrees. Place the oven rack on the second-lowest position.
Place the roast in a pan large enough to hold it comfortably, bones side down, and generously coat the top with salt and pepper. Roast the meat for 45 minutes. Reduce temperature to 325° F. and roast for another 30 minutes. Increase the temperature to 450° F. and roast for another 15 to 30 minutes, or until the internal temperature of the meat is 125° F. (be sure the thermometer is exactly in the center of the roast).
Remove roast from the oven and transfer to a cutting board. Cover tightly with aluminum foil and allow the meat to rest for 20 minutes. Carve and serve with sauce.