Saute the onions in some oil and a little butter, then whn it turns kind of transparent add ginger& garlic paste and chicken pieces cook for a while, then add all the other dry ingredients except for tomatoes, capsicum , curry leaves & corriander leaves and cook for a while..add a little water [ u can also add potato cubes in it..] then pressure cook this til maybe a whistle or so.. then open the lid, add tomatoes, curry leaves, corriander leaves & capsicum and cook till oil leaves the sides of the pan, add few drops of lemon... [check for salt n u can add as much or as little as black pepper u want] [If u like it reall Spicy add extra black pepper]