Peel the papaya's skin well without any green hue. Slice into strips and then chop into cubes.
In a small pressure cooker, add moong dal, top with the chopped papaya, salt, turmeric and water just to immerse the vegetable.
Pressure cook for 3 whistles.Meanwhile grind coconut, green chilli and rice flour with very little water. Add cumin and peeled shallots, give it a run.
Add the ground coconut mixture to the kootu and boil for 2 mins.
Heat a kadai, add oil, splutter mustard, followed by urad dal, curry leaves. Pour it to the kootu and stir well.