In bowl,add white pepper powder,mace powder,nutmeg powder,turmeric powder,garam masala powder,yellow food colour,black pepper powder,carom seeds,cumin powder,red chilli powder,salt,corn flour,ginger garlic paste,green chilli,lemon juice,vinegar,egg and whisk well.
Add marks/cut in whole chicken.
In marination,add whole chicken,mix well and tie the chicken legs.
Let it marinate for 4 hours to overnight in refrigerator.
In pot,add water and heat it,place steam rack and marinated whole chicken,cover and steam cook for 35-40 minutes and basting with the remaining marinade.
After steaming and let it rest for 10 minutes.
In wok,heat oil and deep fry whole chicken until golden brown.
Sprinkle chaat masala & serve