Posted on August 16, 2021August 16, 2021 Flavorful flank steak is marinated for several hours in a marinade of lemon zest, olive oil, rosemary, and garlic, then grilled to perfection. Flavorful flank steak is marinated for several hours in a marinade of lemon zest, olive oil, rosemary, and garlic, then grilled to perfection. Advertisement