INGREDIENTS
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4 pounds boned, fat-trimmed beef short ribs or chuck
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1 orange (2 1/2 in. wide), rinsed
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1 onion (about 8 oz.), peeled and finely chopped
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About 1 cup fat-skimmed beef or chicken broth
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1 cup dry red wine
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1/2 cup port or cream sherry
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1/4 cup balsamic vinegar
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2 tablespoons soy sauce
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1 teaspoon dried thyme or 2 teaspoons fresh thyme leaves
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3 or 4 very thin slices (quarter size) peeled fresh ginger
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1/2 teaspoon Chinese five spice
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1 pound mushrooms (1- to 1 1/2-in.-wide caps)
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2 tablespoons butter or olive oil
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2 tablespoons cornstarch
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Salt and pepper
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1/4 cup chopped fresh chives or green onions