Bring a medium saucepan of water to a boil. Blanch bean sprouts for one minute. Then drain them using a strainer. Set aside while stir-frying the vegetables.
Heat fry pan on low heat.
Add 1 tablespoon of sesame oil to fry pan.
Once sesame oil warms up, add chopped onion to the pan.
Stir onions occasionally. Cook onions until it softens and the edges begin to brown.
Then add the julienne-sliced carrots. Turn the heat up to medium to medium high.
Stirring with a spatula often, cook carrot for about 2 minutes or until the begin to soften.
Then, add cabbage and spring onion to the pan.
Continue to stir often with a spatula to prevent burning.
Once cabbage softens and begins to brown, add moyashi.
Continue to stir with spatula.
Add 2 pinches of salt, soy sauce, and chicken stock, and potato starch. Stir together until all the potato starch is mixed in.
Add sake and mix in with spatula.
Finally, add the cooked shrimp with garlic. Mix together with spatula.
Add freshly ground pepper to season. Stir again with spatula.
Top with rice vinegar or sushi vinegar (optional but recommended!)
Sprinkle aonori on top (optional but recommended!)