This citrus-chile marinade was born out of a need to impress my friends (spoiler: It worked!). A large group of us were on vacation together, and it was my night to cook. What could I feed 12 people in a rental kitchen on a budget? The answer, of course, was tacos — and this easy marinade infused my flank steak with acid, heat, smoke, and a little sweetness. It made for a delicious meal that wowed absolutely everyone.
