Easy, quick and famous chinese simple soup. The chicken stock mixed with corn starch thickens this soup right up. Egg Drop Soup should be a clear, creamy color and a thick texture with white looking ribbon that floats in the soup. Egg drop soup is a Chinese soup of wispy beaten eggs in chicken broth. Condiments such as black or white pepper, and finely chopped scallions and tofu are optional, but commonly added to the soup.