Trim the edges of the coriander. Wash it well by rinsing in water.
Spread it on a white cloth, let the moisture evaporate. Soak the tamarind in water.
Take a pan, add oil, put urad dal to it and shallow fry until golden in colour. Add asafoetida and chilli powder, turn off the stove.
Put it in the jar of the mixer.
In the same pan, put the washed coriander leaves, once they shrink in size, remove them and put in the jar. Use only the soaked tamarind, do not add the water.
Grind all the ingredients together. With a dry spoon mix it and again pulse, it should be finely blend.