Pressure cook cherupayar in 3 cups water & drain the water completely. Make sure that it is not overcooked.
Melt Jaggery in a deep and wide pan by adding 1/4 cup water, once it is melted, strain it.
Add coconut, cooked cherupayar, and crushed cardamom to the strained jaggery. Mix well and cook for 5-7 mins, until the mixture is dried. Remove from fire.
When the mixture (cherupayar+coconut+jaggery) is cool enough to touch, make small balls with the mix. Dip each balls in the batter and make sure it's coated well with the batter.
Heat oil in a deep frying pan. Deep fry till it becomes golden brown all around.