Chop lamb meat into small pieces or grind in meat grinder.
Take a medium pan, heat it. Add cumin and coriander seeds. Fry for 1 min.
Now transfer spices into the mortar and crush well. Add approximately 2/3 tsp of salt, cayenne pepper and black pepper.
Chop onion, garlic cloves and fresh herbs into small pieces,
Combine lamb meat with crushed spices, onion, garlic and herbs.Mix for 5-7 min.
Form patties ( 2 cm thick). Fry or bake them for 25-30 minutes. ( If you plan to bake, preheat oven to 220 C /425 F).
Slice tomatoes, onion and red chili for serving.
Mix yogurt with the remaining spices.
Make pitta bread warm in the toaster maker.
Fill each pitta bread with 1 tbsp of yogurt,onion, chili and sliced tomatoes.
Serve immediately.