"It's best to prepare the meat and marinade a day in advance, but in a pinch you can do it a few hours before grill time. Serve the steak with sauteed spinach or kale and potato salad with warm bacon dressing...."
INGREDIENTS
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1 tablespoon dried oregano
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2 teaspoons ground cumin
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1 teaspoon black pepper
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1 tablespoon salt
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1/4 cup extra-virgin olive oil
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1 tablespoon light brown sugar
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1/2 cup worcestershire sauce
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1 bottle (12 ounces) dark beer
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2 pounds flank steak