In large pot on medium, heat oil.
Sauté garlic and shoga.
Thinly slice chicken or pork into bite-size pieces.
Add chicken or pork and stir-fry.
Cut onion into thin slices.
Cut celery into 1 ½-inch (3.75 cm) lengths and then julienne.
Cut mushrooms into thin slices.
Julienne carrot.
Rinse and drain moyashi.
Add onion, celery, mushrooms and carrots to meat and stir-fry.
Add sugar, shoyu and onion powder. Do not overcook.
Add moyashi and mix.
Add mein noodles and mix thoroughly.
Cover pan until noodles are softened.
Place on serving platter and sprinkle usukaki tamago on top.