Soak sabudana in water for 3 hrs.
Grate raw potato in a bowl, then add green chillis, coriander leaves,curry leaves,red chill powder,onions chopped finely, rice flour, then add chat masala mix well.
Now mix till it becomes dough then make a small dumplings like vada.
Now take oil to fry deep fry in avery slow flame till golden brown colour.