Combine the rosemary, 3 tablespoons black pepper and the vegetable oil; rub all over the roast, cover and refrigerate overnight.
Place a large roasting pan in the center of the oven and preheat to 375 degrees F; let the roast stand at room temperature for 30 minutes.
Season the roast with salt and put in the hot roasting pan, fat side down, to sear; roast for 30 minutes.
Turn the roast over, reduce heat to 350, and roast, turning the pan several times in the oven, until a meat thermometer registers 125 degrees F, about 3 hours.
Transfer to a carving board and let rest at least 20 minutes before carving.
Meanwhile, in a saucepan, melt the butter over medium heat, add the shallots and garlic and cook until lightly browned, about 5 minutes; add wine and boil 2 minutes.
Add stock, vinegar, and thyme; bring to a boil, reduce heat, and simmer until reduced to about 2 1/2 cups, about 20 minutes.
Strain the sauce, then return it to the saucepan; swhisk in the porcini powder and simmer for 1 minutes.
Cover, remove from the heat and let stand for 5 minutes; season with salt and pepper.
Carve the roast and serve with the porcini mushroom jus.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	1314.6 Kcal (5504 kJ)
Calories from fat	683.75 Kcal
		% Daily Value*
Total Fat	75.97g	117%
Cholesterol	390.68mg	130%
Sodium	1091.95mg	45%
Potassium	183.76mg	4%
Total Carbs	8.54g	3%
Sugars	1.38g	6%
Dietary Fiber	1.26g	5%
Protein	131.9g	264%
Vitamin C	0.9mg	1%
Iron	0.3mg	1%
Calcium	18.3mg	2%

Amount Per 100 g
Calories	237.75 Kcal (995 kJ)
Calories from fat	123.66 Kcal
		% Daily Value*
Total Fat	13.74g	117%
Cholesterol	70.65mg	130%
Sodium	197.48mg	45%
Potassium	33.23mg	4%
Total Carbs	1.54g	3%
Sugars	0.25g	6%
Dietary Fiber	0.23g	5%
Protein	23.85g	264%
Vitamin C	0.2mg	1%
Calcium	3.3mg	2%

* 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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