Mint-Chutney -- for Tandoori Recipes: 200 gms Yogurt;  1 and half cup fresh Mint leaves;  1/2 cup fresh Cilantro leaves;  1 green Chili, chopped;  1 small Onion, chopped;  1 tbsp chopped Ginger;  3-4 Garlic cloves, chopped (optional);  1 tsp Cumin powder;  1 tsp Chaat Masala;  1 tsp dry Mango powder or dry pomegranate seeds powder;  Black salt