Boil the pasta in boiling water, adding some extra salt. Boil the pasta as long as it says on the package, or about 1 minute less so it will be al dente (recommended).
Add 1 tablespoon of salad oil to a pan, add the garlic while the oil is still cold, then heat it up.
When the garlic becomes fragrant, add the bite-sized pieces of chicken thigh and fry further.
When the outside of the chicken is browned, add the pasta cooking water, cover, and steam for 2 to 3 minutes
Once the chicken is cooked, add the sake, salt, and Dashi. The pasta sauce is now ready.
Add the cooked pasta and the Mizuna, which is cut into pieces of 3 to 4 cm, to the sauce.
Season with salt.
Place on a plate and sprinkle with black pepper to finish