Prep the Veggies: After cutting the eggplant, keep it soaked in water to prevent it from turning brown. Drain the eggplant and potato pieces right before you start cooking.
Saute the Aromatics: Heat oil in a pan over medium heat. Add the cumin seeds and curry leaves. Once they start to splutter, add the crushed ginger, garlic, and green chilli. Saute for a minute until fragrant.
Cook the Eggplant and Potato: Add the drained eggplant and potato pieces to the pan. Stir-fry them on medium heat for about two minutes.
Steam Cook: Add salt, mix well, and cover the pan with a tight lid. Let the vegetables cook in the steam for 5 minutes.
Stir-fry Again: Remove the lid and continue to stir-fry on medium heat for another 2-3 minutes.
Add the Spices: Lower the heat and add red chilli powder, cumin-coriander powder, garam masala, turmeric, black salt, Maggi masala (if using), and chaat masala. Mix everything thoroughly to coat the vegetables.
Final Saute: Increase the heat back to medium and saute for another 2-3 minutes, allowing the spices to cook well.
Garnish and Serve: Turn off the heat, garnish with fresh coriander leaves, and mix well. Your delicious Aloo Baingan Sabzi is ready to serve!