Peel off the bananas and chop them to pieces.
Take abundant amount of water in a bowl and add 1 tsp salt.
Immediately transfer the banana pieces into salted water before they get discolored.
Boil some water and add banana pieces to boiling water.
Add little turmeric and allow it to boil till banana pieces turn tender but not mushy.
Drain the water and leave aside to cool.
Add yogurt, salt, and turmeric. Mix well.
Heat oil in a frying pan and add cumin. Add curry leaves also.
Fry till cumin seeds start to splutter.
Now add banana pieces and gently stir the mixture.
Pour 1/4 cup water and cover. Cook for about 3 minutes.
Squeeze lemon juice and sprinkle with arrowroot powder. Stir to mix.
Garnish with chopped coriander leaves.
Serve with kuttu chapatti.