In a large mixing bowl, mix together soaked sabudana, boiled potatoes, cilantro, salt, green chilies, roasted peanuts, lime juice, sugar, rajgira atta, and cumin seeds.
Grease a parchment sheet with oil. Wet your hands with water and take a small lemon size ball of the dough and shape it into a round. Press it gently between your palms and keep it on the parchment sheet.
Using your fingers, shape the dough to make a 5-inch round. Keep smoothing the edges using your palms. Make a hole in the center of the circle using your finger.