Take jaggery in a sauce pan, add in ¼ cup of water. Mix well and heat it till it is melted. Now strain it. Take it back in a heavy bottom kadai and bring it to boil.
Add in coconut and mix well. Cook this and keep stiring. The mix will get thick.
Now take a small bowl with cold water, drop a spoonful of mix in water, gather them in your hands, it wont melt and you will be able to make a hard ball. That is the right consitency.
Now transfer the mix to a plate and let it cool a bit.
Grease your hands with ghee. Take small portions and shape it into balls.
Put this in a air tight container. This will keep good for a week.