Wash the chana dal twice and soak for 2 hours. Drain the water completely. Set aside 2 tblsp of chana dal and coarsely grind the remaining dal without any water.
In a bowl add the ground chana dal, onions, saunf, red chilli powder, finely chopped vazhai poo, salt to taste, hing and curry leaves. Mix well.
Preheat the Air Fryer at 200 degrees C for 10 minutes.
To the bowl, add rice flour and 2 tsps of oil. Mix well and shape them into patties
Once the Air Fryer has preheated, place the patties carefully on the mesh and apply oil with the help of brush
Air Fry the vadais at 180 degree C for 8 minutes and then remove, turn over the patties, apply oil and cook again at 180 degrees for 10 minutes until crips on the edges
Repeat the process and air fry the balance vadais in the similar manner.