Prepare the noodles according to paacket directions, drain and set aside.
In small bowl, combine the tamari, sweet chilli sauce and sesame oil. Set aside.
In large frying pan or wok, heat 2 tsps canola oil. Add half the pork and stir fry for 1 - 2 minutes or until just cooked. Remove and cook remaining pork until just cooked. Remove to bowl with first batch of pork.
Add remaining oil to pan and heat over a medium heat. Add the onion and stir fry for 2 minutes. Add the ginger and capsicum and stir fry for about 1 minute.
Add the snow peas and choy sum stems and stir fry for another minute. Add a little water or salt reduced shicken stock to pan if it starts to stick.
Return pork to pan with the tamari mix, choy sum leaves and the noodles. Toss until well combined and heated through.
Spoon intio serving bowls and serve sprinkled with peanuts.