First mash the boiled potatoes in a bowl nicely, add ginger garlic paste red chilli powder turmeric powder cumin powder salt and chopped coriander leaves and mix it well.

Now In a bowl add besan ginger garlic paste red chilli powder salt turmeric powder chaat masala powder and chopped coriander leaves, mix it and add little water and mix it to form a smooth batter. (batter should not be very thick or very thin)