This recipe for grilled flank steak with chimichurri sauce is a classic Argentinean dish that is sure to impress your guests. The steak is marinated in a mixture of garlic, cumin, and oregano, then grilled to perfection. The chimichurri sauce is made with fresh parsley, cilantro, garlic, and red wine vinegar, and adds a bright, tangy flavor to the dish. Serve with grilled vegetables and a glass of red wine for a delicious and satisfying meal.