Ingredients
For the Prime Rib
2.7 – 3.6 kgs bone-in prime rib
165 g unsalted butter, softened
1 garlic clove, minced
½ shallot, minced
1 tablespoon fresh parsley, chopped
½ tablespoon red pepper flakes
1½ tablespoons coarse sea salt
2 teaspoons black pepper
½ tablespoon Dijon mustard
For the Red Wine Au Jus
2 tablespoons unsalted butter
½ cup beef drippings
1½ tablespoons all-purpose flour
⅓ cup red wine
1 ¾ cup beef broth
¼ teaspoon black pepper