In a pan heat oil. Once hot, add mustard seeds and asafetida. Let the mustard seeds pop.
Next add cumin seeds, curry leaves and green chili. Let the seeds pop.
Add the sliced ivy gourd (tendli) and mix well. Cover and let it cook.
Open the cover and add red chili powder, turmeric powder and salt. Mix well.
Cook for another 8-10 minutes. Then, add potatoes and garam masala. Mix well.
Cook covered for 6-8 minutes till the potatoes soften. Add dhania jeera powder and mix well.
Add lemon juice and turn down the flame. Season with cilantro leaves.
Enjoy with rotis or parathas and rice.