Clean and wash white cabbage, leek and celery. Quarter cabbage and cut into strips. Cut leek into rings and celery into slices. Quarter peppers, halve chilli pepper. Remove seeds and white partitions, rinse and cut both into fine strips.
Drain the bamboo. Rinse meat, dab dry, cut into strips. Peel ginger and garlic and chop finely. Fry meat in hot oil, remove. Fry ginger and garlic in frying fat.
Add cabbage, leek and celery, stir-fry for about 5 minutes. Add paprika and chilli, fry briefly. Deglaze with soy sauce and vegetable stock. Stir in Sambal Oelek and simmer for about 5 minutes.
In the meantime, wash the coriander, dab dry, pluck the leaves and chop them except for something to garnish. Stir starch with a little water until smooth, thicken sauce with it. Add the coriander and the meat and warm up briefly.
Serve sprinkled with coriander leaves.