Ingridients:
Urad Daal - 1 cup
Onion - 1 chopped (Optional)
Green Chillies - few chopped fine
Soak the Urad Daal for 4 hrs. Grind to a fine paste Do not add water much. The batter should be thick
In the urad paste add finely chopped green chillies and onion and salt.
Heat oil in a pan
Take water in a small bowl. Wet your left palm and take a lump of the urad paste and put in on te left palm, make a hole in the small ball and take it in the right hand and put it in oil.
Fry in oil in medium heat till the vadas are golden brown