Grass-fed top round steak is a lean, budget-friendly cut from a cow's hind leg, known for its bold, beefy flavor, and comes from cattle fed a natural diet of grass rather than grain, offering more protein and omega-3s. Because it's from an active muscle, it's naturally firm and benefits from marinating and cooking to medium-rare, then slicing thinly against the grain for tenderness, often used for London broil, stir-fries, or sandwiches.