Firstly take a grinder add chana daal and basil,curry leaves and some green chillies...coarsely grind the mixer

Put them in a bowl add rice flour and add pinch of hing and add masalas on it,salt as per taste

Make a balls from it and keep it in a refrigerator for 10min

Heat a appe pan....take the balls from the refrigerator and pour oil in each moulds of appe....

Roast the vadas for about 5-7min from one side and 4-5min from another side in a very low flame....its ready