Heat ghee or olive oil in a heavy-bottomed pan over low heat.
Add curry leaves (if using) and sauté for 20–30 seconds until crisp.
Add makhana and roast on low flame for 6–8 minutes, stirring continuously.
Check for crispness by pressing one makhana between your fingers. It should break easily without feeling chewy.
Lower the heat and add turmeric powder, red chilli powder, black pepper, and black salt.
Mix thoroughly so every makhana is evenly coated with the spice mixture.
Turn off the heat and sprinkle chaat masala and roasted cumin powder.
Toss gently for 30 seconds and allow the makhana to cool completely.
Serve immediately or store in an airtight container.