Pour in 1/4 cup water and mix well. Switch off the stove and let it cool.
Grind the masala to a smooth paste, by adding a little water.
Now in a pressure cooker add the chickpeas and potato with sufficient water and the ground paste and mix it. Allow it to cook till it is done(it takes 6 whistles to be done).
When it is completely done, cook uncovered for sometime so that the gravy thickens. if you want you can mash some of the peas, so that it will get thickened.
Add the thick coconutmilk and let it boil for few more minutes. Adjust the consistency according to your taste.