Posto Chicken is a Bengali delicacy where succulent chicken pieces cooked in a thick, garam masala spiced, poppy seeds gravy.
Wash and grind poppy seeds in a food processor with 1 green chili and water. The paste will be thick, not watery. So, stop the processor in between and keep adding little amount of water. Blitz until smooth paste forms, keep aside.
Heat oil in a deep frying pan, temper with all the ingredients mentioned ‘for tempering’, stir for a few seconds. Add onion paste and sauté until light brown in color.
Then add green chilies, turmeric powder, kashmiri mirch powder, and garlic paste. Mix and stir for a minute over medium heat.
Next to add the freshly washed chicken pieces and salt, mix well. Cover and cook, stir in between.
When the chicken is half cooked, add poppy seed paste and ½ cup of water. Mix well, cover and cook over low heat until the chicken is done. If you feel the gravy is drying up then only add some hot water at this stage.
Next to add sugar, garam masala powder, and ghee. Mix well and cook for another 2-3 minutes.
Remove from the heat. Serve hot with roti, luchi, paratha, naan or rice.