Vegetarian

Cook udon noodles in boiling water until al dente, then drain and leave in a colander
Heat sesame seed oil, add sliced onion and cabbage and sauté until softened
Add shiitake mushrooms and some spring onions and sauté for 1 minute
Pour in the remaining sesame seed oil, add the drained noodles, and stir-fry until heated through and sticky
Sprinkle with the remaining spring onions