First weigh all the ingredients and keep aside.
Take a pan, add the coriander seeds and roast in medium flame until you get a nice aroma. Make sure the pan you use is devoid of moisture.
Once you start getting aroma, remove it from the pan and transfer it to a plate.
Then add the tur dal, saute until it turns light golden brown in colour. Then transfer it to a plate.
Following it, add channa dal, roast until it is golden brown in colour. Transfer it to a plate.
Add black peppercorn, roast it in low flame. While roasting it, slightly close it with a lid so that it will not splutter out.
Then add the cumin seeds, roast until you get aroma. This will get roasted fast, so make sure you remove it at the right time.
Now allow all the ingredients to cool down.
Finally add the red chilli, a tsp of oil and slightly heat it. If you are not comfortable roasting red chilli, you can wear a mask so that you wont start sneezing. Also using a tsp of oil will will help.
Now the ingredients are ready to grind.
Once the ingredients are cooled down, add the red chilli into a mixie jar and grind it to a powder.
Adding red chilli first will ensure that they are ground well.
Then add the other ingredients, turmeric powder and grind everything to a fine powder.
Sieve the ground powder to get a fine powder. And then grind the powder that remain on the sieve again.