01 - Combine sliced beef with 1 tablespoon coconut aminos, 1 teaspoon sesame oil, salt, and pepper in a bowl. Toss thoroughly to coat and let marinate for 10 minutes at room temperature.
02 - Whisk together remaining coconut aminos, rice vinegar, 1 tablespoon sesame oil, and chili flakes in a small bowl until well blended. Set aside for later use.
03 - Heat 1 tablespoon avocado oil in a large skillet or wok over high heat until smoking. Add marinated beef in a single layer and stir fry for 2 to 3 minutes until browned on edges. Remove beef and accumulated juices from skillet and set aside.
04 - Add remaining 1 tablespoon avocado oil to the hot skillet. Add garlic, ginger, and green onions. Stir fry constantly for 30 seconds until fragrant, being careful not to burn the garlic.
05 - Add cabbage and carrot to the skillet. Stir fry for 4 to 5 minutes until vegetables begin to soften but maintain a crisp texture. The cabbage should be wilted but still have crunch.
06 - Return beef and any reserved juices to the skillet. Pour in the prepared sauce and toss everything together vigorously. Stir fry for an additional 2 minutes until heated through and well coated. Taste and adjust seasoning with additional salt or pepper if needed. Serve immediately.