Ingredients
Equipment
Method
Step-by-Step Instructions
- Season the Roast: Coat the prime rib roast with kosher salt. Wrap and refrigerate for at least 24 hours.
- Preheat the Oven: Preheat oven to 250°F (120°C). Adjust the oven rack to the lowest position.
- Prepare the Au Jus: Heat olive oil in a large pot. Brown meaty bones for 10-12 minutes.
- Add Aromatics: Add garlic, carrots, celery, and onion to the pot with tomato paste. Cook for 10 minutes.
- Deglaze the Pot: Pour in dry red wine, scraping up browned bits. Simmer for 2-3 minutes.
- Simmer the Au Jus: Add beef stock, thyme, and bay leaf. Simmer uncovered while roast cooks.
- Cook the Roast: Insert meat thermometer into thickest part. Cook until 115°F for rare or 120°F for medium-rare.
- Rest the Roast: Remove from oven and tent with aluminum foil. Rest for 20-30 minutes.
- Finish with a Broil: Broil the roast for 1-2 minutes on each side for a crispy crust.
- Prepare the Horseradish Sauce: Mix horseradish, Dijon mustard, Worcestershire sauce, and mayonnaise until smooth.
- Serve and Enjoy: Strain the au jus and carve the roast. Serve with au jus and horseradish sauce.
Nutrition
Notes
Allowing the prime rib to rest after cooking is crucial for a juicy roast.
