
If making the pickled greens from scratch, wash the bok choy or mustard greens well, squeeze out as much liquid as possible, and reserve the juice. Chop the greens, simmer them in water for about 1 hour until tender, then drain. Pack into a clean jar with the reserved juice, sea salt, hot water, cold water, and vinegar if desired. Use about 1 cup of chopped pickled greens for the soup.



Bring 4 cups water to a boil in a soup pot. Stir in the chicken bouillon, then add the chicken livers, soaked mushrooms, bamboo shoots, and chopped pickled mustard greens. Reduce to a steady simmer and cook for about 10 minutes, or until the livers are just cooked through and tender.


In a small bowl, whisk together the rice vinegar, light soy sauce, dark soy sauce, mala chili bean paste, cornstarch, and cold water until smooth. Stir this mixture into the simmering soup and cook for 3 minutes, until the broth lightly thickens and turns glossy.


Lower the heat so the soup is gently moving. Slowly drizzle in the beaten egg while stirring in one direction to create delicate ribbons. Add the chopped silken tofu and diced egg tofu, then warm through carefully without boiling hard.



Finish with sesame oil and taste the broth. Adjust with more vinegar for sourness, soy sauce for saltiness, or chili bean paste for heat. Serve hot, with pepper oil pickled mango on the side if using.