In a Bowl, add onions, tomatoes, coriander and salt.
Add yoghurt and mix well.
In a saucepan, add ghee and when it’s hot, add mustard and urad dal.
When it starts to splutter, add to the raita.
Mix well and serve in with pulav or biryani.

Note - add a little water to adjust the consistency of the yoghurt.
You can add finely chopped green chillies for extra flavour.

Video Recipe - https://youtu.be/eCmUPn8KY64