INGREDIENTS
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One 9- to 10-pound boneless prime rib roast, excess fat trimmed, room temperature
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6 cloves garlic, slivered
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Kosher salt and pepper
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2 cups beef stock
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1 stick (8 tablespoons) butter, cubed
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2 cups sour cream
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1/2 cup prepared horseradish
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Juice of 1/2 lemon
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Kosher salt and pepper