Soak uzhunnu parippu in water.
After drain water completely grind it till becomes thick batter.
Add rice flour, chopped ginger, green chilies, onion, curry leaves, crushed whole black pepper corns, baking soda, salt into the batter and mix well.
keep this batter for some minutes(30-45 min).
Heat Oil in heat bottomed pan and set the flame to medium.
wet your palm with water and take a small portion of the dough and shape it into a ball. Press the ball slightly and make a hole in the center using your finger.
Deep fry it by flipping to both sides until it turns golden in color.Don?t over crowd the vada's while frying.
Serve hot with coconut chutney.