In a medium saucepan, add oil and 1 tbsp ghee.
When the oil is hot, add the onion, ginger, garlic, and green chili. Sauté until the onion starts to brown.
Now add your spices - asafetida, turmeric, red chili powder, chole masala, and salt.
Cook for at least 1-2 minutes on medium-low to prevent masalas from tasting raw and bitter.
Add the tomato purée and cook for 2 more mins.
Now add your cooked chickpeas. Adjust consistency by adding more water as needed.
Let this simmer for at least 20- 30 mins. The more you slow cook this, the better.