Steps
1. Whisk the yogurt in a bowl until smooth and creamy.
2. Add the thinly sliced onions and diced tomatoes to the yogurt.
3. Sprinkle in the roasted cumin powder, chaat masala (if using), and salt.
4. Mix everything gently to combine well.
5. Add the lemon juice and chopped cilantro, stir lightly.
6. Chill the raita for at least 10 minutes before serving for best flavor.
7. Serve cold alongside spicy curries or biryanis.