1 cup Urad dal
2 cups Tapioca(maravallikizhangu)grated
1 cup Chopped onion
3 nos Green chili(chopped)
1/2 tsp Fennel seed powder
1/2tsp Ginger grated
4 nos Curry leaves
2tbsp Coriander leaves
Salt as per taste
Oil for deep frying
Soak urad dal atleast for 2 hours, meanwhile grated tapioca finely and keep aside,grind urad dal just sprinkle some water will helps to grind, while the urad dal is half grounded(never add more water even its hard to grind) add the grated maravallikizhangu to the urad dal..this will help to grind evenly both urad dal n maravallikizhangu, let them grind for a while..take off the vada batter in a large bowl..
Add finely chopped onions, green chillies pieces,curry leaves, chopped cilantro leaves, ginger, fennel seed powder, salt n mix everything together..heat oil in a pan, take a small ball out of the batter n make them as vadai, make a small hole in the middle of the vadai n pour it in hot oil, do them as batches..
Tasty n crispy Tapioca(Maravallikizhangu) medhu vadai is ready to serve...
Notes
If the batter is slightly watery, can add a tablespoon of rice flour..
Make sure that oil should be very hot...


