re: Prime Rib perfected - Christmas 2013 Edition

i also put the rib roast in oven at 500 for so many mins per pound. then turn off and leave for hour and a half. do not open oven. this way when you take out you can serve right away, you do not have to let it rest. the bad thing is you can't put anything else in the oven. need to think about that if you need more oven space. to make horseradish sauce, add horseradish and sour cream a little lemon juice. then add a little of the drippings from roast. don't overdue or it will get watery