Black urad dal ; 1 cup
Black pepper : 1 tbsp
Rice flour : 1 tbsp
Asafoetida : a pinch
Salt : to taste
Wash ans soak the urad dal for 1 hour.
Drain the water & take the dal in a mixie jar, grind it with salt to a coarse paste without adding water.
Lastly add the black pepper and just give a pulse.
Remove from jar,transfer it to a bowl,add rice flour,curry leaves, asafoetida and mix everything well.
Heat oil in kadai.
Take a aluminum foil sheet / plastic sheet ,grease it with oil.
Take a lemon size ball of the batter,press to a thin vadai.
Make a small hole in the middle.
Fry in the hot oil till golden brown.