Add water to idli rava and keep this aside for 15 minutes.
Prepare the jackfruit coconut paste. Take a high speed blender, add finely chopped ripe jackfruit, fresh coconut, jaggery powder, cardamom and make a fine paste.
Mix the jackfruit coconut paste with soaked idli rava, salt and adjust the consistency with water. Keep aside for 30 minutes.
The batter will be thick dropping consistency. Pour this into oil smeared moulds.
Steam cook for 20 minutes. Allow them to cool for 5 minutes. Now using a spoon, loosen the sides and remove the kadubu or idli. Serve this with ghee or any coconut chutney of choice