Perfect Prime Rib Roast with Red Wine Jus

INGREDIENTS

• 1 bone-on beef rib roast (about 7-8 pounds)
• 1 1/2 pounds oxtail bones
• 1 tablespoon tomato paste
• 2 onions, quartered
• 3 carrots, cut into thirds
• 3 stalks celery, cut into thirds
• 1 whole head garlic, halved
• 2 tablespoons cooking oil, divided
• salt and pepper
• 1 cup red wine
• 1 3/4 cups beef broth
• 1 3/4 cups chicken broth
• 3 sprigs fresh thyme