Kibbeh with Yoghurt Dip

Name: Kibbeh with Yoghurt Dip
Prep time: 55 min
Cook time: 1 h
Total time: 1 h
Yield: 12 piece
Ingredients: 20 g allspice berry; 10 g turmeric, dried, ground; 10 g cinnamon stick; 1 tsp clove; 1 tsp coriander seed; 1 tsp black peppercorn; 1 tsp nutmeg, ground; 250 g bulgur wheat; 60 g walnut halves, shelled; 120 g onion; 30 g olive oil; ½ teaspoon brown sugar; 200 g ground lamb; ½ tsp salt; ½ tsp black pepper, ground; 1 tsp sumac; 80 g onion; 4 leaf mint, fresh; 300 g ground lamb; 1 tbsp za'atar; 10 g cornstarch; 30 g water; 1 tsp salt; 1 garlic clove; 7 - 9 mint leave, fresh; 250 g Greek yoghurt; 10 g lemon juice; ¼ tsp salt; ¼ tsp black pepper, ground; 1 dash olive oil