Soak soya chunks in hot water for 1/2 an hour

Then soak chana dal 1 hour separately

Take it out in a wide vessel add chopped onion, chopped green chillies, coriander leaves, and salt then beat the batter thoroughly with your palm so that you get a smooth and fluffy mixture

Now heat sufficient oil in a kadai or deep bottom pan

To make vada, take small amount of paste on your palm and do a hole on middle portion and slip it in hot oil carefully and deep fry in 3 to 4 batches in a medium flame until golden in colour from both the sides

Now take them out carefully on an absorbent paper

Meanwhile take curd in a bowl and beat until smooth, add black salt, sugar, roasted jeera and red chilli powder, green chillies and salt

Then heat a pan add oil for tempering