Mix white egg yolk, food color, cumin seed powder, ginger garlic paste, fennel seed powder, salt n corn flour into thick paste, squeeze out excess of water from the chicken pieces n mix with the spices..marinate the chicken pieces for at least one hour..heat oil for deep frying, fry them in batches until they get well cooked…
Heat oil in another pan, fry the curry leaves n slit opened green chillies..meanwhile mix all the ingredients from list (to mix)..
Once the green chillies r well fried, add the thick paste of yogurt n all spices, stir them continuously in simmer, once they start boiling add the already fried chicken pieces n cook them until the oil get separates, its should be dry..chicken pieces will get well coated with the yogurt gravy..