Greek lamb rolls with yoghurt dressing

Name: Greek lamb rolls with yoghurt dressing
Prep time: 20 min
Cook time: 40 min
Total time: 40 min
Yield: 4 portions
Ingredients: 200 g Greek-style natural yoghurt; ¼ tsp sumac; ½ tsp dried mint; 170 g plain flour; ½ tsp salt; 100 g hot water; 1 garlic clove; 2 sprigs fresh flat-leaf parsley; 500 g lamb mince; ¼ tsp dried chilli flakes; ½ tsp ground cumin; ½ tsp ground coriander; ½ tsp paprika; ½ tsp salt; ½ tsp ground black pepper; 1 tsp dried mint; water; olive oil; 1 lemon