Add cooking Oil in a frying pan. When oil is warm, add Mustard seeds, cumin seeds, a pinch of Asafoetida.
When mustard seeds crackle, add sliced onion and saute till onions turn translucent. Add grated ginger, curry leaves and saute.
Now add sliced potato, ivy gourd, garam masala, red chilly powder, amchur powder, and turmeric Powder. Mix it well and keep stirring for few minutes on high flame.