Heat the 3 tablespoons of the avocado oil in a heavy large skillet over medium-high heat. Add the cabbage, mushrooms, bok choy and carrots, and stir-fry until the vegetables are tender, about 3-4 minutes. Gently stir in the coconut aminos. Transfer the mixture to a medium bowl. Add the bone broth, Bone Broth Protein and a dash of the avocado oil, remaining coconut aminos, ghee, apple cider vinegar and salt. Stirring continuously, boil for about 2-3 minutes. Keep warm. Season the tuna steaks with the salt and pepper. Heat the remaining avocado oil in a large skillet over high heat. Add the tuna steaks and cook to desired doneness, about 2 minutes per side for medium-rare. Plate the vegetables, top with the tuna and ladle the sauce over top. Serve immediately