01 - In a bowl, toss tofu cubes with cornstarch and sea salt until evenly coated.
02 - Heat 2 tbsp oil in a large nonstick skillet or wok over medium-high heat. Cook tofu for 8 to 10 minutes, turning occasionally, until all sides are golden and crispy. Transfer tofu to a plate and set aside.
03 - In the same pan, add a splash of oil if needed. Sauté garlic, ginger, and the white parts of the spring onions for 1 minute until fragrant.
04 - Add bell pepper and carrot to the pan. Stir fry for 2 to 3 minutes until just tender.
05 - Incorporate bok choy and stir fry for 2 minutes until greens wilt and stems remain crisp.
06 - Whisk together soy sauce, water, maple syrup, toasted sesame oil, rice vinegar, and chili flakes in a small bowl.
07 - Return tofu to the pan and pour sauce over the ingredients. Toss to coat evenly and cook for 1 to 2 minutes until heated through and sauce thickens slightly.
08 - Remove from heat. Sprinkle with toasted sesame seeds and reserved spring onion greens. Serve immediately, optionally over rice or noodles.