Wash, pat dry the eggplant, apply 1 tsp of oil and brush well on all sides. Using a fork, prick the eggplant in 4-5 places to ensure even cooking.
Once the eggplant is roasted, the skin will appear charred (as seen below). Use a fork and scrape the skin off. Mash the eggplant and keep aside.
Heat a pan, add 1 tsp of oil, chana dal, urad dal, coriander seeds and whole red chillies. Saute these ingredients until the dal has roasted brown in colour and the red chillies crisp up.
Add 1/4 cup grated coconut, saute for a few seconds and then switch off the flame.
Allow both the ingredients (eggplant and the lentil mix) to cool completely.
Transfer the contents into a mixer grinder jar and add tamarind, jaggery, salt to taste and hing or asafoetida. Grind using little water. The texture and consistency of this chutney should be creamy.