firstly, in a blender take 1 potato and ¼ cup water. make sure to peel the skin and roughly chop.
blend to smooth paste. keep aside.
in a large kadai heat 2 tbsp oil, splutter ½ tsp mustard, ½ tsp cumin, 1 tsp chana dal, pinch hing, few curry leaves and 2 chilli.
now add 1 cup rava and roast on low to medium flame. roast until the rava turns aromatic.
transfer to the bowl and cool completely.
add in a prepared potato puree, ½ cup curd, ½ tsp salt and 2 tbsp coriander.
mix well-combining everything well.
rest for 15 minutes or until the rava absorbs well.
now add ¼ cup water adjusting consistency as required.
just before steaming add ½ tsp eno and mix gently.
pour the batter in greased idli plate.
and steam the idli for 15 minutes.
finally, enjoy aloo idli with coriander chutney.