Wash and make 4 slits in the brinjals( +), keeping the steam and the brinjal intact .
In a bowl mix all the spices listed in - Spice to mix(A)
Heat oil in a pressure cooker and add mustard seeds ,when they start crackling add kalonji and grated ginger.
Saute and add chopped tomato,stir for a minute and add the spice mixture(A).
Stir for 30 seconds and then add brinjals and salt ,saute for a minute.
Add 1 cup water,mix well,and pressure cook on medium flame for 1 whistle.
Open the cooker as soon as it cool down.
Add tamarind pulp and sugar and cook for 1 minute on medium flame.
Add fresh coriander and serve.