Preheat the oven to 350 degrees F.
Lay the beef in a large roasting pan with the bone side down. (The ribs act as a natural roasting rack.) In a small bowl mash together the garlic, horseradish, salt, pepper, and olive oil to make a paste. Massage the paste generously over the entire roast. Scatter the vegetables and halved garlic around the meat and drizzle them with a 2-count of oil. Put the pan in the oven and roast the beef for about 1 1/2 to 2 hours for medium-rare (or approximately 20 minutes per pound). Check the internal temperature of the roast in several places with an instant-read thermometer; it should register 125 degrees F. for medium-rare. Remove the beef to a carving board and let it rest for 20 minutes. The internal temperature of the meat will continue to rise by about 10 degrees. Remove the vegetables and set aside. Pour the pan juices into a fat separator or small bowl and set aside to allow the fat and beef juices to separate. Pour off and discard the fat. You will use the tasty beef juices for the mushrooms.
Place a clean skillet over medium heat. Add the butter and a 2-count drizzle of oil. When the butter starts to foam. add the mushrooms and thyme; and season with salt and pepper. Stir everything together for a few minutes. Add the red wine, stirring to scrape up any stuck bits; then cook and stir to evaporate the alcohol. When the wine is almost all gone, add the reserved beef juices. Let the liquid cook down and then take it off the heat. Stir in the cream and chives, and season with salt and pepper.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	842.8 Kcal (3529 kJ)
Calories from fat	377.96 Kcal
		% Daily Value*
Total Fat	42g	65%
Cholesterol	388.43mg	129%
Sodium	9972.2mg	416%
Potassium	2088.77mg	44%
Total Carbs	14.93g	5%
Sugars	6.45g	26%
Dietary Fiber	4.3g	17%
Protein	96.59g	193%
Vitamin C	11.6mg	19%
Vitamin A	0.2mg	8%
Iron	6.6mg	36%
Calcium	125.2mg	13%

Amount Per 100 g
Calories	113.62 Kcal (476 kJ)
Calories from fat	50.96 Kcal
		% Daily Value*
Total Fat	5.66g	65%
Cholesterol	52.37mg	129%
Sodium	1344.42mg	416%
Potassium	281.6mg	44%
Total Carbs	2.01g	5%
Sugars	0.87g	26%
Dietary Fiber	0.58g	17%
Protein	13.02g	193%
Vitamin C	1.6mg	19%
Iron	0.9mg	36%
Calcium	16.9mg	13%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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