Soak the dals for over 3 to 4 hours.
Grind them using as little water as possible into a thick paste.
Add in all the ingredients one by one into this paste.
Take a lemon sized ball from the vada batter and make a dent in the centre with your thumb and drop them into hot oil.
Dip your hands in water and make these vadas easily.
Lower the heat when you drop them into oil and then increase the flame to medium high afterwards.
Deep fry in batches until all are done.
Serve them hot with green chutney or any dip of your choice.