Take medium sized maravalli kizhangu wash and peel of the skin.

Grate them. It's really little hard to grate my hubby helped me out. So choose little or medium sized.

The grated tapioca or maravalli kizhangu is ready.

Take equal or little lesser Urad dal approximately and soak overnight.

Add to a mixie jar.

Add grated tapioca.

Add salt and grind without adding water. Add little if needed.

Grind to a smooth paste like this.

Add cut green chilly

Add cut onions

Add fresh curry leaves.

Add fresh coriander leaves.

Mix well by hands. At once place kadai on stove add oil and preheat. Do not keep mixture for longer, it may leaves water.

Make vada shapes from the mixture and add to the oil.

Cook in low to medium flame.

Once done take the vadas from oil and serve hot.

Very crispy and tasty vada is ready.