In a processer jug ,add tomatoes, carrot, water, blend well & set aside.
In a bowl,place muslin cloth,add cinnamon sticks,green cardamom,cloves,black peppercorns,bay leaf & tie to make a potli (bouquet garni) & set aside.
In a pot, add cooking oil, onion & sauté until translucent, add garlic & mix well for a minute.
Add chicken & mix well until it changes color.
Add paprika powder,salt,mix well & cook for 2-3 minutes.
Add blended paste, mix well & cook on medium flame for 3-4 minutes, now add chicken stock cubes & mix well.
Add prepared potli (bouquet garni),water,mix well & bring it to boil,cover & cook on low flame for 25-30 minutes. After remove & discard potli (bouquet garni) & turn off the flame.
Mash the chicken with the help of masher.
Turn on the flame,add instant oats,mix well & bring it to boil,cover & cook on low flame for 15-20 minutes.
Add lemon juice, fresh coriander & mix well. Sprinkle black pepper powder, fresh coriander & serve hot!