Keep the syrup hot while frying the boondi.
It is better to keep the flame on the lower side.
If crystallizes, hearing will de-crystelize the syrup again.
Add little water if the syrup thickens.
Once the boondis are fried, add those directly to the syrup and mix properly.
Batch by batch add all the fried boondi to the syrup.
Once mixed properly, take this mixture through a good processor or mixer grinder for 30 seconds.
This step will help in breaking the boondi. Do not over-mix though.
Take the mixture in a plate.
Add black cardamom seeds, melon seed and half of the chopped pistachios and mix.
While the mixture is hot yet to be handled by hand, apply ghee to your palm and make balls out of this mixture.
Top each ball with a piece of sliced pistachio.