Wash the chicken thoroughly and prepare it.
Add the chicken and water to a pot and bring to a boil.
Remove foam as it forms.
Add onion, green onion, and garlic, and simmer for over an hour.
Take out the chicken and shred the meat.
Strain the broth to make it clear.
Add the shredded chicken back into the broth, season with salt and pepper.
Garnish with chopped green onion.