For my Mother's Birthday my Dad and I decided that we would cook a boneless prime rib roast on the grill. We picked one up at the grocery store that weighed in at about 10 lbs. It was well marbled and had a nice fat cap on it, not too thick. It was tied up into a compact shape.INGREDIENTS
5-10 llb Boneless Prime Rib Roast
1/4 c. Black Whole Peppercorns
1/8 c. White Whole Peppercorns
3 Tbs. Whole Mustard Seeds
Kosher Salt
