- In a large bowl soak 1 cup sabudana in enough water for 3 hours. also soak 1 cup rice, ¼ cup urad dal and ½ tsp methi in enough water for 4 hours. drain off the water from sabudana and blend to smooth paste. also blend soaked urad dal and rice to fine paste adding water as required. further mix sabudana batter, rice-urad dal batter and ¼ cup curd. ferment in a warm place for 8- 12 hours. next day, add 1 tsp of salt. heat the griddle and pour a ladleful of the batter on it and spread it very gently. sprinkle some ghee. then cover the dosa for a minute and cook till the top of dosa is cooked completely in presence of steam. Serve hot.