1. Drt roast 1/2 cup coriander seeds till light brown in color. roast about 17 long dried red chilli, 2 tbsp chana dal, 1.5 tbsp of urad dal, 1.5 tbsp of cumin seeds (cumin seeds roast very fast, so be cautious & don't burn it),1 tbsp peppercorns, 1.5 tsp of fenugreek seeds, 1.5 tsp of mustard seeds, few curry leaves.
2. Now, turn off the stove & then add 1/2 tbsp of turmeric powder, 1/2 tbsp of asafoetida powder.
3. Let the roasted ingredients cool down completely.
4. Grind them into a fine powder. your sambar powder is ready. store in an airtight container. use as and when you need.