Take the chicken and wash it thoroughly with fresh water and drain all the water.
Add turmeric, salt, red chilli powder and mix it thoroughly until you feel all the chicken is covered with the added ingredients.
To this, add ginger garlic paste, yogurt, lemon juice, and garam masala. Mix it well.
Also add few onion pieces, slit green chillies and the half of mint leaves, half of the coriander leaves and mix well and set it aside.
Keep in the fridge for use till the next day. Anyhow, you can use this mixture anytime the same day after 6 hours of marination.