At first boil potatoes by adding salt

Then in a pan add oil then zeera and curry leaves now add immli chutney(it include sugar+immli+bhunamasala)

Now stir it well then add gurh powder and bhunamasala

Now add sour salt, chaat masala and holding powder then add almost half cup of cornflour water (add cornflour in a cup then water mix it well)

Now add boiled potatoes and mix.. Then add corriender and serve...