Chop the cabbage: Trim the base, quarter lengthwise, remove core if tough, and chop into 1–1 1/2-inch pieces. Rinse and pat dry well (dry cabbage sears better).
Prep aromatics: Grate ginger (microplane) and mince garlic.
Heat the pan: Set a large skillet or wok over medium-high heat. Add oil and heat until shimmering.
Bloom aromatics: Add ginger and garlic; sauté 30 seconds until fragrant (do not brown).
Sauté cabbage: Add cabbage; toss to coat in the aromatics and oil. Stir-fry 3–5 minutes until edges look glossy and the thick ribs are just tender but still crisp.
Season: Add soy sauce; toss 30–60 seconds to coat. Taste and season with salt and pepper.
Serve: Off heat, finish with sesame seeds or a whisper of toasted sesame oil. Serve immediately.
Cook’s Note: If your pan looks crowded, sauté in two batches for better sear and sweetness.