Wash and soak sabudana for overnight in 3 Cups of water. Wash potatoes and pressure cook till 2 whistle on low flame. Let potatoes cool and peel off the skin. In a bowl add all the ingredients, mix well. Take enough big pot, place the micture into it and cook on low heat, till sabudana starts to transparent. cover and cook till sabudana gets transparent(stir eventually to avoid sticking at the bottom).