For the Tandoori spice mixture, cut the cinnamon sticks smaller. Grind or crush cardamom, cumin, coriander seeds, cloves and cinnamon in a spice mill or mortar. Put the crushed spices with nutmeg, cayenne pepper, turmeric and paprika powder into a screw glass and shake until everything is mixed
Clean and wash the cauliflower and remove the outer leaves. Peel garlic and ginger and cut into pieces. Grind or crush ginger and garlic finely. In a bowl, mix with 1 heaped tablespoon tandoori spice mixture, lemon juice and 1 teaspoon salt. Stir in 150 g yoghurt. Spread the cauliflower with marinade all around in a bowl, cover and leave to marinate for about 1 1/2 hours
Place the cauliflower on a baking tray lined with baking paper. Cook in the preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: see manufacturer) for approx. 45 minutes. Then reduce the oven temperature (electric oven: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) and cook for another 30 minutes.
In the meantime, wash the mint, shake dry, pluck off the leaves and chop them. Mix 3/4 of the mint, oil and remaining yoghurt, season to taste with salt and pepper. Remove the cauliflower, arrange on a plate, sprinkle with the remaining mint and serve with lemon wedges. The rest of the spice mixture can be kept for about 6 months if kept closed in a dark place
waiting time approx. 1 1/2 hours