Grilled Lamb Steak with Aubergine, Red Onion, Tomatoes and Mint and Tahini Dressing

500g lamb leg steaks ½ teaspoon turmeric 1 teaspoon garam masala ½ teaspoon smoked paprika 1 tablespoon oil Mix the spices and oil in a dish and add the lamb. Mix well to coat and chill for a couple of hours. Remove from fridge 20 minutes before cooking 2 small aubergines cut into 1cm slices 1 red onion, cut in half through the root then each half into 4 wedges through the root 150g cherry tomatoes on the vine Oil for brushing Salt for seasoning.Brush the aubergine with oil and season with salt. Toss the onions in a little oil to coat. Grill the lamb, aubergines and onions on the barbecue – they should all take the same time – 5 minutes each side. Season with salt as you cook. Add the tomatoes for the last 2 minutes. Place the vegetables on a platter and allow the lamb to rest for 5 minutes before slicing.Mint and tahini dressing Handful of mint, leaves shredded 4 scallions, chopped 1 teaspoon tahini 1 teaspoon maple syrup 150ml sour cream 100ml good olive oil Salt and pepper to taste Blend the mint, scallions, tahini, maple and sour cream together to a smooth puree. Blend in the oil and season to tasteSpoon around the platter of lamb and vegetables to serve.