Recipe(tried): Fool Proof Prime Rib

1 standing rib or rolled rib roast
fresh ground pepper

The roast must be at room temp. Rub it with the fresh ground pepper. Place in a roasting pan (rib side down, if bones are in) and roast uncovered, in a preheated 375 degree oven for exactly l hour. turn oven off, but do not remove roast from oven. DO NOT open the oven door at any time during this roasting period or while roast is resting in the oven (do not hold in the oven longer than two hours).

About an hour before serving, set oven again to 325 degrees and continue roasting as follows:
2 rib roast - 25 min
3 rib roast - 30 min
4 rib roast - 35 min
The roast will be med rare throughout.