- Combine broth, 2 soup cans water and ginger in medium saucepan. Bring to boil over high heat; reduce heat, cover and simmer 5 minutes. Discard ginger.
- Combine cornstarch and 1/4 cup water; stir into saucepan with corn. Cook over high heat, stirring constantly, until mixture boils and is slightly thickened.
- Gradually pour egg into boiling soup, stirring constantly, but gently, in one direction.
- Remove from heat; stir in green onions and soy sauce. Serve immediately.