- firstly, take 1 cup sabudana in a large bowl. 
- add enough water, rub and rinse for 3 times or until water run clean. 
- further, add ¾ cup water and soak for 6 hours. 
- transfer the soaked sabudana into the blender and add ½ cup water. 
- blend to smooth paste adding water as required. 
- further add 1 potato, 1 tsp cumin, 1 chilli and ½ tsp ginger paste. 
- also, add ½ tsp pepper powder, 2 tbsp curry leaves, ¼ cup kuttu atta and ¾ tsp salt. 
- add 1 cup water, whisk and mix well to form a thick batter. 
- rest the batter for 10 minutes or more. 
- further, pour a ladleful of batter onto a hot tawa and spread gently. 
- pour 1 tsp of oil over chilla and roast on medium flame. 
- now flip the chilla and cook both sides pressing gently. 
- finally, sabudana aloo chilla is ready to serve with green chutney.