Soak the cumin seeds, 1.5 tbsp black peppercorns and 2 bay leaves in warm water for 15 odd minutes. Drain from water, grind to a smooth paste with very little water. Keep aside.
Make a paste of the turmeric powder and coriander powder with very little water. Keep aside.
Heat oil in a Kadhai. Throw in the remaining black peppercorns and bay leaves, allow the spices to splutter.
Add the chicken pieces, sear over high heat for 3-4 minutes.
Stir in the turmeric-coriander paste and yogurt, continue to cook over a medium flame till oil starts getting released from the masala.
Add the papaya cubes, green mango slices and a sprinkle of salt . Give it all a hearty stir.
Now add the cumin and black peppercorn paste, cook for a further 5 minutes or so. Add 1.5 cups of warm water, bring to a gentle simmer and cook over a medium flame till the chicken and papaya are tender.
Add the sugar and freshly ground black pepper powder. Adjust seasonings. Serve hot.