Heat oil in a pan. Once hot, add mustard seeds. Once the mustard seeds splutter, add a generous pinch of asafoetida.
Add red chillies and saute till the colour changes slightly.
Add urad dal and chana dal. Roast them well on a low flame till the dals turn golden brown.
Transfer these to a wide plate and let it cool down completely.
To the same pan, add grated coconut. Add required amount of salt and saute on a low flame till the coconut becomes dry and turns slightly golden brown.
Make sure you don't burn the coconut. Switch off and let the coconut cool down to room temperature.
To a mixie jar, add the roasted dal and chillies. Grind to a coarse powder.
Now, add the coconut, a pinch of sugar and grind again.
Grind the mixture into a slightly coarse powder. Do not grind too fine; the coarse texture gives the best mouthfeel.
Taste and add salt if needed. If adding salt, grind again briefly.
Let the powder cool completely before transferring it to an airtight container. Delicious thengai Podi is now ready to be served.
Your flavourful Thengai Podi is ready! Store it in a cool, dry place or refrigerate for longer shelf life.
Notes
Adjust red chillies to suit your taste. You can add more if you want a spicier podi.