INGREDIENTS
1
6- to 7-pound bone-in prime rib, bone-in
4 cloves
Garlic
3
sprigs Rosemary, fresh
3
sprigs Thyme, fresh
3 cups
Beef stock, low-sodium
1 tbsp
Dijon mustard
1/4 cup
All-purpose flour
2 tbsp
Black pepper, coarsely ground
1/4 cup
Kosher salt
1 tbsp
Sherry vinegar or red wine vinegar