"Never grill a thick steak like hanger over high heat; it will burn long before it's cooked through...."
INGREDIENTS
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8 dried guajillo chiles, seeded
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4 large garlic cloves
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2 teaspoons dried oregano
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6 tablespoons canola oil, plus more for brushing
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Salt and freshly ground pepper
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1 trimmed hanger steak (about 1 pound), cut into 4 pieces
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1 large onion, finely chopped
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1/4 cup light brown sugar
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1/4 cup cider vinegar