Marinate the chicken with ginger/garlic paste, dark soya sauce, slitted green chillies, pepper powder, curds & salt. Keep for 10mins.
Make sure you use the dark soy sauce not the thin watery kind
Take the ghee in a kadai - fry the sliced onions till brown & bit crispy. Keep it aside.
In the remaining ghee pour the marinated chicken & cook without water.
Once the chicken is done add the tomato ketchup & the fried onions . Cook for just 3mins.