Soak chickpeas overnight.

Peel and cube potatoes.

Cook together chickpeas,potatoes,gram flour,soda,turmeric and salt.

Cook till chickpeas and potatoes are tender and little gravy is left.

Peel and slice the onion.

Heat oil in a pan.

Fry onion till light golden.

Add onion along with oil to the chickpeas.

Mix it very well.

Add in masala,coriander,mint and tamarind.

Mix all well.

Serve straight away.