Add 2 cups of water to the corn flour and mix well.
Add the food colour and mix without any lumps.Heat the remaining water in a pan over medium flame.Add sugar and stir until fully dissolved. Add lemon juic Bring to a boil.

Add the corn flour mixture and stir well continuously.
When it starts to stick to the pan, add ghee, cardamon powder and stir again.When it has reached a halwa consistency and leaves the sides of the vessel, transfer to a greased tray.
Sprinkle melon seeds and allow it to set