Peel the potataoes and cut in pieces.
Put it hot wwater with ½ tsp yellow color, baking powder and ½ tsp salt and wash it for a minute .
Now sieve with cold water.
In a bowl mix gram flour, flour, salt, corn flour, red chili powder and 1 tsp chaat masala.
Now put the potatoes in this mixture and fry in hot oil.
Serve it with imli chatni and ketchup.