Make sauce: use a small jug to combine and whisk the oyster sauce, soy sauce, dark soy sauce, mirin, brown sugar and rice wine vinegar. Set aside.
Cook pork: at 2 tbs peanut oil in fry pan at high heat, add pork mince and cook till browned, breaking up and clumps as you go, then remove from pan.
Cook vegetables: use the same pan to stir fry the vegetables for 2 to 3 mins.
Cook noodles: according to the packet instructions, drain, then add to the cooked vegetables.
Add pork: add cooked pork back to the pan, pour sauce over and stir fry till dish is heated through.
Serve: portion into bowls, garnish with chopped green onions (optional) and serve with chopsticks.