Wash the dal and pressure cook with 1.5 cups of water (2 whistles, 5 min on sim).
Peel and cube the mango roughly, scraping off any flesh around the seed (stone). This should make a generous cup to nearly a cup and a half in quantity to get full flavour of mango in the dal.
Place the cubed and scraped mango flesh, coconut, green chillis in the small mixer jar and grind to a paste.
In a pan / kadai, heat the ghee.
Add the asafoetida, cumin seeds - letting the seeds splutter.
Add grated ginger, cinnamon stick, curry leaves, turmeric powder. Saute for 30 seconds and then pour in the mango-coconut-chilli puree.
On a medium flame, stir this for 1-2 minutes.
Add pressure cooked dal, salt and up to 1/2 cup water to get the desired consistency of dal.