First soak the channa dal for 3 to 4 hours or overnight, then wash and drain them
Then grind the soaked dal along with green chilli, cilantro, hing, and ginger
Finally, add grated coconut and salt, pulse once or twice to mix everything together
Place this mixture in a cooker vessel and steam cook it for one or two whistle
Once the cooker is cool, take this mixture and cool it again until you can handle it easily.
Break the crumbs with hand and make it more like dry mix.
Now the filling is ready.