firstly, in a large bowl break 6 slices of potato into small pieces.
add ¼ cup rava, ½ cup rice flour, ¾ cup curd.
also add 1 onion, 1 tsp ginger paste, 1 chilli, few curry leaves, 2 tbsp coriander, 1 tsp cumin and ½ tsp salt.
squeeze and mix well.
mix until a soft dough is formed. if the mixture is dry, you can add a tsp of more curd. and if it is sticky, break another bread slice.
now grease hand with oil and pinch a ball sized mixture.
flatten slightly, and make a hole in the centre.
deep fry in hot oil keeping the flame on medium.
stir occasionally, until the vada turns golden brown and crisp.
finally, drain off and enjoy bread medu vada with tomato sauce or chutney.