Wash curry leaves well with salt water, drain water completely and wipe it dry with a kitchen napkin.
Dry roast curry leaves on a medium flame until it turns crisp and crushes with hands easily. It takes almost 6-8 minutes to become completely crisp.
Transfer roasted curry leaves into a blender/ dry mixer jar.
In the same pan, heat 1 teaspoon of oil, regulate flame to low and roast chana dal (Bengal gram) and urad dal (de skinned split black gram), until lentils turn light golden in colour.
Now add in dry red chilies and roast for about 2-3 minutes.
Add in dry coconut, cumin seeds, garlic cloves, tamarind, roast for a minute and turn off the stove.
Transfer all the roasted ingredients to the same blender/ mixer jar. Let it cool down completely in a blender / jar itself. As keeping roasted spices in the pan, itself radiates heats and burn the spices when kept for cooling.
Add hing, turmeric powder , salt and jaggery .
Blend everything to a fine powder . Store in air tight dry glass jar, stays fresh upto 1 month.
Serve it with rasam rice, sambar rice, make podi idli , season and mix with rice or poha . I have tried everything and it tastes equally good with all the mentioned combinations.