Urad dal : 1 cup
Raw rice : 1 tsp
Chopped onion : 1/4 cup
Green chillies : 2 nos
Grated ginger : 1/4 tsp
Wash & soak urad dal and rice for 2 to 3 hours.
Strain it completely and grind along with green chillies,salt,ginger for 45 minutes.
Sprinkle water if necessary.
Once done,remove from grinder ,add curry leaves,asafoetida and mix well.
Heat oil in a kadai, take a banana leaf or plastic cover ,wipe it with water,take a little amount of urad dal mixture,spread and make a little hole in the middle, take it out from the leaf / cover , add it in the hot oil.
Slowly flip the vadai to the other side and let it fry.
Once the vadai becomes golden brown,remove from oil.
Note : Skip the onion if you are making for pooja.