Prime Rib with Horseradish Cream Recipe

Place roast fat side up in shallow roasting pan. Cut slits into meat; insert garlic slices in slits. Sprinkle roast with pepper. Bake, uncovered, at 450 for 15 minutes. Reduce heat to 325, bake 2 3/4 to 3 1/4 hours longer or until meat reaches desired degree of doneness (for medium-rare, meat thermometer will read 145 degrees, for medium, 160, for well-done, 170). Meanwhile, in small bowl, beat cream until soft peaks form. Fold in horseradish, vinegar, mustard, sugar, salt and pepper. Cover and refrigerate for 1 hour. Remove roast to serving platter and keep warm; let stand for 15 minutes for slicing and serving. Serve with horseradish cream.