1: Prepare noodles according to packet instructions, usually with a quick 30-second blanch in boiling water. Drain, rinse in cold water, and set aside.
2: Mix all the sauce ingredients in a bowl until well combined.
3: Heat cooking oil in a frypan over high heat. Add onion and white parts of the green onion, frying for 30 seconds.
4: Add garlic and fry for another 30 seconds. Then add carrot and capsicum, frying for 1-2 minutes, adding water if needed.
5: Add bokchoy and cabbage, cooking for another 1-2 minutes until almost cooked through.
6: Add noodles, sauce, and tofu puffs, tossing well over high heat until coated. Adjust seasoning if necessary.
7: Finally, add bean sprouts and remainder of green onions, tossing for another 30 seconds. Garnish and serve.