INGREDIENTS
1
7- to 8-pound boneless prime rib, boneless roast
1
bunch Chives, fresh
1 cup
Horseradish, prepared
1
Kosher salt
1
Kosher salt and freshly ground black pepper
2 tbsp
Mixed or tri-color peppercorns, coarsely cracked
2 sticks
Butter, unsalted
2 cups
Sour cream