Boil and peel the potatoes and cut into 1 inch cubes.
Blend Corriender leaves, Green chilly, ginger and hing in a mixer to make a fine paste.
Put this paste in a bowl add salt,Chaat masala, cumin powder,black pepper powder,and lemon juice. Whisk it.
Add cubed potatoes in the paste and mix well gently.
Now it is ready to eat.it is best eaten with a tooth pick.