Marinate chicken fillets in:Salt, Garlic,Ginger, jeeru (cumin) Powder, Dhana, little Hyder, Chilli powder & yoghurt.Leave overnight.
In a pot put ghee (Clarified butter) (not oil),Add a tuj (cinnamon stick), Elachi (cardomom), lavin & a few whole black peppers.Add little whole jeeru (cumin) & onions, braise till it's brown.Add tomatoes & cook.Then add the chicken marinade & cook till done with thick gravy.
Cut potatoes in round thick chips & fry on medium.
Boil rice in extra water & drain removing starch.
Set like normal biryani & garnish with coriander, fried onions & boiled eggs.
In a cup mix ¼ cup yoghurt & ¼ cup water.Pour over the set biryani & cover with foil. Leave it in a preheated oven for 30 minutes.
Serve with yoghurt & salad