In a small bowl combine the horseradish, garlic, pepper, salt, oil, fresh herbs and spices.
Rub the mixture over the entire surface of the prime rib, then let it rest to allow the meat to come up to room temperature (about 45 minutes to an hour depending on the size of your prime rib).
Preheat your BBQ to a medium-high heat (about 350 degrees).
Place your prime rib onto the rotisserie, and at this high heat, sear the meat for about 10 minutes.
After this time frame, turn the heat down to about 200-250 degrees.
Make sure to have a drip pan under your meat, as it catches all the good drippings, and you can make gravy or a sauce with it (just make sure to strain it first). We put some of the 14 Hands Hot to Trot Red Blend in the pan during the cooking process for extra flavour!
The roasting time will take about 2 1/2 to 3 1/2 hours, depending on how you like your meat done, as well as how big your roast is (basically, apply the rule of 20 minutes per pound).
Remove your roast when it is about 5 degrees below the internal temperature you want, and let it sit, covered with foil, for about 15 minutes.