INGREDIENTS
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Steak:
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1 orange, unpeeled and thinly sliced, divided
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1/2 onion, peeled and thinly sliced, divided
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4 cloves garlic, halved and smashed, divided
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2 1/4 pound flank steak
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Salt and freshly ground black pepper
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1 cup light-colored beer, preferably lager
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Salsa:
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1/3 cup low-sodium soy sauce
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1 large lime, juiced
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1/2 serrano chile, seeded and minced
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1 green onion, thinly sliced
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2 teaspoons chopped fresh cilantro
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1 head butter lettuce, leaves separated
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1 avocado, peeled, pitted, and thinly sliced