ACtually that dark coloured channa is relatively simple to cook. You just need the boiled small chicked peas.warm oil and Put chick peas in along with water. Add salt red chili, a pinch of soda, and let it cook for long on slow heat. Mash some channas when they are soft to thicken the sauce. Ideally grind a little quantity and add back. Your sauce will be ready. Its simple but the essence is soda.