First,you should have a bowl,to mixing the chicken,dahi,garlic, chillies, black pepper powder,salt,for marinating process.

After,15min,you need a karai or cooking bowl,and start the oven,first you have to put 2 table spoon oil(not mustard),dein the whole chicken with gravy.

After,15min in high pressure it will be cooked and chicken will be exact boiled too.