Wash and soak the sabudana in enough water around 3-4 hours, then drain over the strainer or colander to remove the excess water.
Take a mixing bowl and mash the boiled and peeled potatoes in it.
Add the soaked sabudana, crushed peanuts, green chilies, cumin, ginger, lemon juice, salt and chopped coriander leaves.
Mix all the ingredients properly and make a stiff dough or mixture and keep aside.
Heat the oil in a deep frying pan. While oil is heating enough make tikkis or patties or vadas.
Now take the prepared mixture.
Apply few drops of oil on your hand palm, so mixture won't stick to the hand.
Take small-small portion from the prepared mixture and make patties or tikkis or vadas and keep aside.
Once the oil hot enough drop the 2-3 tikkis into the oil, fry it for 1 mins then flip to another side and fry it again till both sides become golden brown.
Remove fried vadas using a slotted spoon on paper towel. Use same method for rest of the vadas.
Now Sabudana Vadas are ready, serve with green chutney along with hot masala chai and enjoy the treat.