Cover the pressure cooker with a lid and cook the chicken for 15 mins on medium-high heat, mixing in between.
:- 15 mins is enough for boneless chicken. Chicken with bone might need more time. I am assuming that chicken is half cooked by doing this, allowing the rest of the cooking to happen with the rice under pressure.
Drain the rice and keep it aside, while chicken is getting cooked.
After 15 mins., add mint leaves, coriander leaves, cashew nuts, drained rice, rose essence and mix well.