In a mixing bowl, add 1 cup tamarind and 1 cup hot water. Soak tamarind till it become soft.
Now strain tamarind pulp and keep it aside.
In a mixture jar, add coriander leaves, mint leaves, green chilli, ginger, tamarind pulp, jaggery, water and ice cubes. Grind it into thick paste.
Take out grinded paste into mixing bowl. Add 1.5 litre water and mix well.
Then add cumin powder, black salt, chaat masala, jaljeera masala, salt, hing and black pepper powder. Mix well.
Garnish with coriander leaves, fried boondi and red chilli flakes.
Refrigerator pani for 2 hrs so masala flavor absorbs in it.
Serve street style pani with puri and masala.