Cut the chicken breast into bite-sized pieces.
Boil the chicken breast with green onion and garlic in water.
Once the broth is made, remove the chicken breast and shred it along the grain.
Add the oatmeal and simmer.
Return the shredded chicken breast to the pot.
Season with salt or soy sauce.
Serve in a bowl and sprinkle with seaweed flakes or sesame seeds.