Clean the chicken and boil in a pot adding 2 cups water and 1tsp of salt for 10 min. Then put 4 tsp butter in a non-stick pan and add boiled chicken pieces (keep water aside) and add turmeric and fry them in low flame. Next add all half of sliced and paste onion, ginger garlic, whole of yogurt and spices and salt. Mix all properly , and fry them,then add water that was kept aside. Add salt as preferred. Cover and boil it. When its done few add the remaining ginger ,onion n garlic paste and green chilli, and boil for 2 min. Keep gravy as preferred, less tastes better. Serve with rice or roti. Enjoy.