Turkish Spicy Ground Meat Kebab

Name: Turkish Spicy Ground Meat Kebab
Cuisine: Middle Eastern
Ingredients: 500g ground lamb (or a mix of lamb and beef for a balanced flavour); 1 medium onion, finely grated; 2 cloves garlic, minced; 1 red bell pepper, finely minced; 1-2 fresh red chilies, finely minced (adjust to taste); 1 tsp paprika; 1/2 tsp ground cumin; 1/2 tsp ground sumac (optional, for a tangy note); Salt and black pepper to taste; Fresh flat leaf parsley, finely chopped (for garnish); Lemon wedges, for serving