Cut the cauliflower into florets, dice the onions and garlic, chop the chilli. Sweat the onions, garlic and chilli in oil.
Then add the cauliflower and chopped ginger and pour in the vegetable stock until the cauliflower is almost covered. Simmer and add the diced potatoes.
Grind the black cumin, coriander, pepper and fenugreek in a mortar and add to the cauliflower. Add the turmeric and red lentils. If the liquid is not enough, add some broth.
Add the sour cream when the lentils are soft. Season to taste with salt. Serve with fresh herbs as desired.