Wash the chicken fillets and pat them dry. Halve the onion. Put onion halves with the cut surface down in a pan and fry them without fat until dark brown. Tap lemon grass flat.
Peel the ginger and cut into thin slices. Halve the chilli, remove the seeds and cut into small pieces. Bring chicken fillets and 1.5 litres of cold water to the boil and season with bay leaf, ginger, lemon grass, peppercorns, chilli, halves of onion and salt.
Simmer broth 30-40 minutes at medium heat. Halve, clean and wash the peppers. Cut the bell peppers into strips. Clean, wash and cut the cabbage into strips. Remove the meat, let it cool down a little and cut it into cubes.
Wash the coriander, shake dry and put 4 stems aside. Pluck the remaining leaves from the stems and chop them finely. Pass the stock through a cloth or a very fine sieve. Cook white cabbage in the chicken stock for 10-15 minutes, season with curry and salt.
Add the paprika and bamboo strips after about 5 minutes. Finally add sprouts, chicken cubes and coriander, bring to the boil. Arrange in small bowls and garnish with coriander.