1.To make lentil salad, heat oil in a small saucepan over moderate heat. Add cumin, ginger and garlic; cook and stir for 30 seconds or until fragrant. Transfer mixture to a bowl. Add lentils, coriander and juice; toss to combine. Set aside.
2.Brush lamb with tandoori paste. Heat oil in a large non-stick frying pan over moderate heat. Add lamb; cook for 2 minutes each side for medium rare or until cooked to your liking. Transfer to a heatproof plate. Cover with foil; rest for 5 minutes. Slice.
3.Combine yogurt, cucumber, carrot, onion, coriander and cumin in a bowl.
4.For each wrap, spread a quarter of yogurt mixture over bread. Top with lamb; roll up. Cut in half. Serve with lentil salad.