01 -
Combine the julienned pork shoulder with 1 tablespoon of water until absorbed. Add a pinch of salt, vegetable oil, and cornstarch; mix thoroughly and set aside.
02 -
Halve dried chili peppers, remove seeds, and mince; set aside. Soak lily flowers, wood ear, and shiitake mushrooms separately in 1 cup warm water each for 1 to 2 hours until hydrated. Slice mushrooms thinly, chop wood ears roughly, and trim and halve lily flowers.
03 -
Cut both spiced dry tofu and firm tofu into 2-inch by ¼-inch pieces. Julienne bamboo shoots. Beat the egg and finely dice the scallion; set aside.
04 -
Bring chicken stock to a boil in a large pot. If pork clumped, add 1 tablespoon of water to loosen and stir into boiling stock, breaking up any clumps. After simmering resumes, skim off foam with a fine mesh strainer.
05 -
Add salt, sugar, dried chili peppers if using, white pepper, dark and light soy sauces, and sesame oil; stir to combine.
06 -
Incorporate lily flowers, wood ear mushrooms, shiitake mushrooms, and bamboo shoots. Return to a gentle simmer.
07 -
Stir in both types of tofu and pour in white vinegar. Mix well to develop authentic flavor.
08 -
Combine cornstarch and water to form a slurry, mixing thoroughly. While stirring the soup steadily in a circular motion to create a whirlpool, slowly drizzle the slurry in gradually, stopping when about three-quarters is used. Continue stirring until the soup returns to a simmer and reaches desired thickness, then add remaining slurry if thicker texture is preferred.
09 -
Taste the soup and adjust white pepper and vinegar levels to achieve preferred heat and sourness.
10 -
Maintain a simmer and stir soup in a slow swirling motion. Gradually drizzle beaten egg into the moving soup to create silky ribbons.
11 -
Ladle soup into bowls and garnish with chopped scallions. Serve immediately.