Place the potatoes along with tomato, salt, water and red chilly powder in a vessel and cook on a low heat for 30 mins, until very soft.
Remove from heat and mash.
Add the remaining ingredients and mix well.
:- Check taste and if you want it to be very sour, you can add more tamarind sauce.
Make small round balls off it.
Mix together gram flour, coriander, salt, baking powder and enough water to make a thick batter.
Heat oil in a frying pan.
Dip potato balls in batter and coat well with it.
Deep fry Potato Bhajia, till golden brown.
Drain Potato Bhajia on an absorbent paper.
:- Serve Potato Bhajia hot with chutneys.