Drain the boiled noodles well. Cut the pork into ½ inch cubes (1 cm) cubes. Cut the cabbage into strips, 1 inch (2 cm) in width, and the carrots into long, thin strips (fine strips 2mm x 5cm) and slice the leek diagonally, 5mm.
Heat the oil in a frying pan and fry the pork and vegetables. When cooked thoroughly, add the noodles.
Add the soy sauce, sake, salt and pepper and MSG to season.