"From Mable Hoffman's Crockery Cookery. I really liked this crockpot dish. Flank steak is lower in fat than many cuts...."
INGREDIENTS
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1 -1 1/2 lb beef flank steak
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1/4 cup sauterne white wine (regular dry white wine isn't quite as good)
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1 tablespoon soy sauce
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1 garlic clove, minced
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10 1/2 ounces condensed beef broth
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1 tablespoon ketchup or 1 tablespoon tomato paste
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1 tablespoon prepared mustard
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1 small onion, finely chopped
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3 tablespoons cornstarch
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1/4 cup water
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1/2 lb fresh mushrooms, sliced