Wash and dry the leaves on tissue paper. This step takes maximum time generally, I will let the leaves sit on the tissue for 8 hours. After 8 hours, I roast the leaves in a wok on low flame until they dry out. Set aside to cool on a plate.
In a kadhai/wok, dry roast chana dal on low flame until it becomes aromatic. The dal will look a little brownish. Transfer to a plate and set aside to cool.
Next, dry roast the urid dal till crisp and reddish. Add to the plate of cooling chana dal.
Similarly, dry roast the coriander seeds and the fenugreek seeds individually. Set aside on the plate where the dal is added.
On these hot ingredients, add the chilli powder.
Add the sesame seeds and roast till they splutter. Add to the same plate as the dals.
Dry roast the groundnuts until golden brown. Transfer to a different plate to remove the skins.
Dry roast the desiccated coconut and the rock of asafoetida until light golden. Add the dried drumstick leaves and a teaspoon of oil. Roast until you get an aroma. Switch off the flame. Transfer the ingredients from the plate to the wok and mix well.
Once all the ingredients cool, add them to a mixer jar. Add salt and run the mixer till the ingredients become a coarse powder.
Store in an air-tight container. It stays fresh for months when stored in a refrigerator.