Whisk the fresh yogurt until smooth and creamy.
Add the chopped onion, tomato, green chili, and coriander leaves.
Mix in the roasted cumin powder and salt.
Stir everything well until evenly combined.
Chill the raita in the refrigerator for 10–15 minutes.
Garnish with a pinch of roasted cumin powder and fresh coriander before serving.
Serve cold with biryani, pulao, parathas, or any Indian meal.