Switch on the saute mode (medium) in your instant pot. When the base becomes hot, add 1 tsp oil and add all the ingredients mentioned under "to grind"  except the coconut. Saute them until the lentils start turning golden.

Now add the coconut and saute briefly (about a minute). Now set aside everything in a bowl to cool. When cool enough, grind the ingredients with little water to a thick paste.

Now add the remaning oil to the IP and add all the ingredients for the tadka. Let the mustard seeds pop. (Keep the saute mode high when you do the tadka)

Add the vegetables, turmeric powder, lentils, 2 cups water, salt and switch off the saute mode.

Add the ground paste to the IP and close the lid. Cook in manual high for 7 minutes. Release pressure after 8 to 10 minutes or you can wait for the pressure to subside.

Serve hot with rice/ rotis.

Heat your pressure cooker and add a tsp of oil. Add the ingredients for the ground paste (mentioned under "to grind") except the coconut and saute until the dals turn golden. Now add the coconut and saute for a minute. Grind everything to a thick paste with little water.

Add the rest of the ingredients (vegetables, lentils, salt, ground paste, turmeric powder, 2 cups water) and cook for 2 whistles. Open when the pressure settles naturally

Now make a tadka by heating the remaining oil in a pan. When hot, add the mustard seeds, urad dal, asafoetida and let the mustard seeds crackle. Add the tadka to the cooked kootu and mix well. Serve hot with rice/ chapatis.