In a bowl or plastic seal bag, add sliced sirloin steak, teriyaki sauce, bourbon, mushrooms, onions, and squeezed lemon juice. Let marinate for 2-12 hours. Before pulling out to grill, make sure to strain meat & veggies to remove as much marinade juice as possible.
Use some Cowboy Southern Style Hardwood Lump Charcoal to light fire and let burn for 10-15 minutes. Once Charcoal is white hot, push into one pile for direct grilling.
Place cast iron wok with avocado oil over fire 2-3 minutes before cooking to preheat.
Add strained & marinated steak & veggies to wok and cook over high heat for 8 minutes or until the veggies have browned. Pull wok off grill and add steak back to grill grate to finish. Cook the steak until 115F for medium-rare. Let steak rest for 5-8 minutes.
Slice steak & top with salt, pepper, parsley, and grilled veggies. (Optional: Add some rice to a bowl and eat with steak. Enjoy!