Cook the soba according to package directions. Drain. Douse with cold water and drain well.
Heat the cooking oil in a non-stick wok. Cook the pork over high heat for about 2 minutes.
Add the cabbage and carrot and cook for another 30 seconds, stirring often.
Add the cooked noodles, pour in the teriyaki sauce and cook, tossing, for another 30 seconds.
Top the teriyaki udon with snipped nori before serving.