Grind all the green chutney ingredients. Soak the tamarind and gud and squeeze the pulp

Add a lot of water salt and chaat masala to the tamarind and gud pulp to make a watery juice

Add a spoonful of the green chutney to the tamarind and gud juice

Add a finely chopped onion fresh coriander leaves and salt to the boiled and mashed

Make small holes in the puris. Fill them with boiled and mashed potatoes and chilled tamarind juice and serve