Add broth to a medium saucepan and bring to a boil over medium heat.
Stir in 1 tbsp soy sauce and 1/4 tsp ginger (add up to 1/2 tsp if you'd like).
In a small bowl mix together water and cornstarch until smooth then stir into the boiling broth.
Slowly pour in your beaten eggs into the broth, stirring continuously.
Continue to whisk until all eggs are added in.
Stir in green onions and pour into bowls to serve.