Peel the potatoes and cut into small cubes. Set aside.
Heat oil in a large frying pan or skillet.
Add cumin seeds, green chilies and ginger. Sauté, stirring, for 1 minute.
Add potatoes and asafetida. Stir to combine. Sauté, stirring occasionally, for 3-4 minutes or until the potatoes get a light brown color.
Add ground turmeric, ground cumin, red chili powder, amchur powder and ground coriander. Stir to combine. Sauté, stirring, for one minute or until aromatic.
Season with salt.
Add water. Stir. Cook, covered, for 5-6 minutes or until the potatoes are tender but not mushy.
Add coriander (cilantro) leaves, kasuri methi (dried fenugreek leaves), lemon juice and sugar. Stir to combine. Heat through.
Garnish with more coriander (cilantro) leaves if you like.
Serve as a side with Indian meal or with your favorite roast.