Smoked Prime Rib Roast & Horseradish Cream - BrickHouse Grille

Ingredients

• 1 standing rib roast (3-4 bone), about 7-8 lbs
• 2 tbsp olive oil or Dijon mustard
• 3 tbsp Kosher salt
• 2 tbsp coarse black pepper
• 1 tbsp garlic powder
• 2 tbsp fresh rosemary, chopped
• 1 tbsp fresh thyme, chopped
• 1/2 cup sour cream
• 1/4 cup mayonnaise
• 3-4 tbsp prepared horseradish
• 1 tbsp fresh lemon juice
• 1 tsp Dijon mustard
• 1 tbsp fresh chives, minced
• Salt and pepper to taste