Wash curry leaves sprigs thoroughly under running water. Shake off excess water from the sprigs and separate the leaves. Wipe excess water.
Put the leaves in a wok and dry roast them on medium flame till they become crisp. You have to keep stirring them to avoid leaves from burning.
Wash and soak the lentils- channa dal and white split urad dal for 30 minutes in hot water.
Drain the water and pat dry with a kitchen towel. In a wok, add a tsp of oil and roast both the lentils till till they are golden brown. Set aside.
In the same wok, add coriander seeds, black peppercorns, dry red chilies, cumin seeds and seed mix. Roast till they become fragrant, 3-4 minutes. Set aside.
Once everything cools, add the mixture to a spice grinder jar. To it add a tsp of salt and asafoetida/hing.
Once everything cools, add the mixture to a spice grinder jar. To it add salt and asafoetida/hing.
Coarsely powder all in a blender jar without adding water.
Store in an airtight glass container at room temperature, away from humidity. This will last you good 2-3 months.