Creating a mouthwatering Australian Wagyu flank steak is simple if you follow these clear steps:

1. Prepare the Marinade: In a small bowl, mix olive oil, minced garlic, rosemary, thyme, sea salt, black pepper, and balsamic vinegar.
2. Marinate the Steak: Place the flank steak in a sealable plastic bag or shallow dish. Pour the marinade over the steak, ensuring it’s well coated. Seal the bag or cover the dish and let it marinate for at least 30 minutes (or up to 2 hours for more flavor).
3. Preheat the Grill or Pan: Heat your grill or skillet over medium-high heat. Ensure it’s hot before cooking the steak for a good sear.
4. Cook the Steak: Remove the flank steak from the marinade and let any excess marinade drip off. Place it on the preheated grill or pan. Cook for about 4-5 minutes on each side for medium-rare, adjusting the time based on your desired doneness.
5. Check for Doneness: Use a meat thermometer to check the internal temperature. Aim for 130-135°F (54-57°C) for medium-rare.
6. Rest the Steak: Once cooked, remove the steak from the heat and let it rest for 5 minutes. This allows the juices to redistribute, ensuring a juicy and flavorful steak.
7. Slice the Steak: Using a sharp knife, slice the steak against the grain into thin strips for optimal tenderness.
8. Serve: Arrange the sliced steak on a serving platter and garnish with lemon wedges.

Following these steps will lead you to a delicious and beautifully cooked Australian Wagyu flank steak that will impress anyone at your table.