"While the Herb-Crusted Standing Rib Roast is resting, cook this side dish in the roasting pan with drippings (and omit the oil from recipe)...."
INGREDIENTS
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2 tablespoons extra-virgin olive oil
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3 tablespoons grainy mustard
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3 tablespoons packed light-brown sugar
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1 tablespoon cider vinegar
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1 1/2 pounds shallots (about 12), root ends trimmed
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1 pound medium carrots, cut into 2 1/2-inch pieces
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Coarse salt and ground pepper
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2 tablespoons unsalted butter