Prawn patties(konju vada)

Potato large 1,prawn cleaned and deviened 1 cup,onion chopped 1/2 cup,ginger chopped 1 tblspn,
garlic chopped 2 tspn,green chilly chopped 2 tspn,cilantro chopped 2 tblspn,salt to taste.
Cooking oil as required
Marinate prawn with turmeric powder and salt.Keep for 15 mins.Cook prawns ,blend and keep aside.
Cook potato as a whole,peel,mash well.Add all the ingredients together.Mix thoroughly.Keep for
15 mins.Brush oil in palms and make patties of the mix.Shallow fry it.