For preparing dahi baingan in oriya style, first cut brinjal into thin 2-inch long pieces.
Prepare a mixture of turmeric powder and some salt. Marinate the brinjal pieces with this paste and keep aside for 15 minutes.
Heat oil in a frying pan and fry the brinjal pieces to a golden brown color. Keep this aside.
Pour the yogurt into a serving dish and add salt, sugar, little water and fried brinjals. Mix together gently.
Heat little oil in a pan and splutter mustard seeds. Add fenugreek, cumin, kalajeera and fennel seeds and fry in low heat for a few seconds.
Add green chillies and ginger. Fry and add curry leaves.
Pour the fried contents into the brinjal yogurt mixture. Do not stir.
Dahi baingan in oriya style, a traditional oriya favorite, is ready. Serve hot.