Mix flour and salt to make the dough.
Let the dough rest, then roll it out thin and cut into noodles with a knife.
Finely grind the perilla seeds and set aside.
Boil the broth.
Add the knife-cut noodles to the boiling broth and cook until done.
Stir in ground perilla seeds and soup soy sauce until well combined.
Add vegetables such as zucchini, potato, etc. and cook until tender.
Season with garlic and pepper to taste.