Turkish Chicken Kebab | Video

Name: Turkish Chicken Kebab | Video
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Middle Eastern
Ingredients: Sumac, to sprinkle on chicken; Yogurt, to serve; Lemon wedges, to serve; 20 bamboo skewers; 10 cherry tomatoes, halved; 1 small cucumber, chopped; 1 small red onion, sliced; Juice of half of lemon; 1 tbsp sumac; Salt and pepper to taste; 1 kg chicken breast, diced; 2 tbsp tomato paste (tomato purée); 1 tsp minced garlic (garlic paste); 1 tbsp oil; 1 tbsp paprika; 1 tsp Aleppo chilies (or dried red chili flakes); 2 tbsp natural yogurt; 1/2 tsp ground cumin (cumin powder); Salt to taste