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.
Note: For medium-rare prime rib, we want to take the roast out of the oven at 128Â°F, and it will continue cooking until it reaches 130Â°F. If you prefer a medium prime rib, take it out at 135Â°F with a target temperature of around 140Â°. Roast until the meat's internal temperature reaches 128Â°F, which will be another two and a half to five hours, depending on the size of your roast. 2  When the prime rib hits 128Â°F, take it out of the oven and transfer it to a cutting board and cover it with foil.