Set the Instant Pot in saute mode and add oil.
Once it heats, add cumin seeds.
Next, add onion, ginger, and garlic. Saute for 3 minutes, until the onion softens.
Add tomatoes, Kasoori methi, coriander powder, chili powder, turmeric powder, sugar, and salt. Mix well and saute for 2 minutes.
Deglaze the pot well.
Add potato and eggplant cubes. Add ½ cup water and mix well.
Secure the IP lid and set it to pressure cook mode for 3 minutes.
Once the Instant Pot beeps, turn it off and do a quick release.
Add garam masala, lime juice, and coriander leaves. Mix well.
Serve with Basmati rice or roti.