Wash and soak urad dal in water for two hours
Put the soaked dal in the jar; add green chilly, ginger and coriander to it, a small quantity of water, grind them to a fine paste.
Remove the batter in a bowl. Add salt, curry leaves, coconut pieces to it. Mix it thoroughly.
Heat oil in a pan. Take a small quantity of the batter, make it in the shape of a doughnut. Slowly, slip it into the oil. Put a couple more into it.Deep fry until golden in colour.
Repeat for the rest of the dough. Do check the collage given below.
Blend the curds, do not add water.Add salt to it.Make seasoning in a small pan, add mustard seeds, as they splutter, put asafoetida and curry leaves. Put it over it.Put the wadas in it.While serving, garnish with a little sweet chutney, chilly powder and coriander.