Chinese
Soak the shiitake and wood ear mushrooms in hot water for 20 minutes, then squeeze them dry, remove the shiitake stems and slice both thinly.
Cut the tofu and bamboo shoots into thin strips and slice the green onions.
Bring the broth to a boil in a large pot, add the pork and stir to separate the strips.
Add the mushrooms, bamboo shoots and soy sauce and simmer for 5 minutes, then add the tofu and simmer for 2 minutes more.
Stir the cornstarch mixture, pour it in while stirring and simmer for 1 minute until the soup thickens slightly.
Turn off the heat, pour in the beaten eggs in a thin stream while stirring slowly so they form ribbons, then stir in the vinegar and white pepper.
Ladle into bowls and finish with the sesame oil and green onions.