Soak cashew nuts in water for 4 hours and grind into a thick paste. Boil sugar with 1 cup water and prepare a thick syrup. Add ground cashew nuts to the syrup and stir continuously on a low flame. Add ghee also. When the content leaves the sides of the vessel, remove from fire. Pour the content evenly to a greased vessel and cover with the silver foil. When cool, cut into diamond shape pieces.