Dilute the cornstarch in 1/4 cup water. Stir and mix well. Set aside.
Combine chicken broth and water in a cooking pot, Bring to a boil.
Add the grated ginger. Cook for 2 minutes.
Pour-in the beaten egg. Stir.
Add-in the cornstarch diluted in water. Continue to stir until the texture of the soup reaches your desired texture.
Add salt to taste.
Transfer to a serving bowl. Sprinkle green onions on top.
Serve. Share and enjoy!