Bring broth and ¾ cup green onions to boil in soup pot.
Mix together sugar, salt, cornstarch, soy sauce and 1/3 cup of water until smooth.
Stir soy sauce mixture into boiling broth and boil for about 1 minute.
Beat eggs with remaining 1 tablespoon water into a bowl.
Pour egg mixture into soup and cook, stirring with a fork until eggs are opaque (about 1 minute).
Garnish with remaining green onions.
***Feel free to add vegetables, mushrooms, spinach, etc.