Press the Pressure cook mode on and set it to NORMAL and set Pressure to HIGH for 2 minutes.
It will take 6-7 minutes for Insta Pot to kick in after getting warm enough. When the timer goes off after 2 minutes, Release the pressure manually after 7-8 minutes.
Open the lid carefully. You will notice that the leaves have settled down at the bottom and Insta Pot has lot of space. Cancel the Manual mode.
You got to PUREE the Contents inside the Pot. Now there are 2 ways to Puree it. Either use Hand Blender and Puree the leaves OR transfer the contents into a blender and puree. Pick whichever method yo want to. If pureeing in blender, then transfer it back to the insta pot.
In a cup, dissolve 1 tbsp corn meal or besan with 1/2 cup water, leaving no lumps behind.
Add this corn meal or besan mix to the Leaves Puree plus add 2 more cups of water. Adjust salt and red chili to your taste, if required. How? do a taste check with spoon and adjust :).
Add the peeled baby potatoes or 2 large potatoes chopped into 1 inch cubes to the Kale or Mustard leaves puree. Give it all a good stir.
Set your Instant Pot on Pressure Cook / Manual Mode on NORMAL. Keep the Pressure level LOW and set the time for 4 minutes.
After few minutes, manual mode will kick in action. Once the timer goes off after 4 minutes, let it sit like that till pressure is released normally on its own.
Once pressure is released, open the IP and you will notice that Saag is cooked and so are the potatoes inside.