Clean, wash and drain the carrots, cauliflower and white cabbage. Cut carrots into slices, white cabbage into wide strips. Divide cauliflower into florets. Peel onion and ginger.
Chop the onion coarsely, dice the ginger finely or chop it. Wash the chilli, cut lengthwise and remove the seeds. Cut or chop the chilli into fine rings. Heat the oil in a large pot.
Brown onion, ginger and chili in it, dust with curry and fry briefly. Add vegetables, turn briefly and deglaze with stock. Add some salt, bring to the boil, cover and simmer for about 20 minutes.
Season soup with salt and serve garnished or sprinkled with a dash of yoghurt and fresh coriander.