Loosen the udon in hot water for 1 minute and drain.
Stir-fry the meat in the oil in the wok for 2 minutes.
Add the onion, carrot, mushrooms and cabbage and stir-fry over high heat for 3-4 minutes.
Add the noodles, soy sauce, mirin and oyster sauce and toss for 2 minutes.
Serve with katsuobushi; it keeps 2-3 days in a box; sprinkle with a spoonful of water and reheat covered in the microwave for 2-3 minutes, stirring halfway.
A Receptnaptár original recipe. Calories and protein are estimated.