Clean and wash the cauliflower, divide it into florets and cook for about 10 minutes in boiling salted water. Wash and drain the raisins. Roast pine nuts in a pan without fat until golden brown.
Peel and finely chop the onion. Heat the fat in a pot and fry the onion until transparent. Add red lentils and steam briefly. Pour in broth. Cook for about 10 minutes. Drain cauliflower and let it drain well.
Mix raisins and pine nuts under the lentils. Add vinegar and oil. Season to taste with salt, pepper and coriander. Pour marinade over the cauliflower and arrange lukewarm on plates. Garnish with coriander.