The noun RATTLE has 3 senses: 1. a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders). 2. a baby's toy that makes percussive noises when shaken. 3. loosely connected horny sections at the end of a rattlesnake's tail.
Residual Heat or Carry-Over Cooking: Remember, the rib roast will continue to cook as it sets. The internal temperature will rise to 125 degrees F. to 130 degrees F. (medium rare) in approximately 15 to 20 minutes. If allowed to rest as long as an hour, the internal temperature will rise even higher.So, pay attention to how long you let the cooked prime rib roast sit.rime Rib Roast (standing rib roast), at room temperature (very important) 2 tablespoons butter, room temperature. Preparation: Preheat oven to 450 degrees F. Pat the room-temperature standing rib roast (prime rib roast) dry with paper towels or napkins.
1 After 20 minutes of high heat cooking reduce heat to 350Â°F and continue to roast for 1 hour to 1 hour and 15 minutes OR until the meat thermometer reads 130Â°F for rare doneness OR 140Â°F for medium-rare doneness, that is the way a prime rib really should be served, check your roast after 1 hour cooking time. Cover roast, and refrigerate overnight. 2  The next day, remove the roast from fridge and uncover; let sit out at room temperature for about 2 to 2-1/2 hours (this is an important step to relax the meat fibers, it will make for a more tender juicy roast, the length of counter-time will depend on the size of your roast).