Now heat vegetable oil in a pan.
Temper the oil with Asafoetida, bay leaves, black cardamom, and also cinnamon sticks.
Once the spices emit aroma add the white paste and keep cooking on low flame for 5 minutes.
Stir continuously.
After 5 minutes add ginger paste and mix well.
At this point add two green chilies (or more).
Cook till the raw aroma of the seeds and nuts is not there completely. This should take 2 more minutes.
Now add hung curd or plain yogurt and mix again.
Cook for 3 minutes on low flame.
Now add Salt, Sugar, and also white pepper powder.
Cook for a few minutes. The oil will start floating on the top.
Mix well and add 2 cups of water.
Add boiled potatoes and cover with a lid.
Cook on low flame for 10 minutes.
Once done, add Ghee and Bengali Garam masala as well and mix lightly.
Serve it hot with Roti/ Paratha/ Luchi/ Poori.