Heat oil over medium heat in a heavy bottomed kadai/pan, once it is hot enough, add the cumin seeds and let it crackle. Add hing and dried red chillies. Sauté for half a minute.
Add minced ginger and garlic, sauté until fragrant.
Add chopped onions, sauté until translucent.
Next, add the cubed potatoes, turmeric, and salt. Give it a good mix and cook covered over medium-low heat until the potatoes are about 80% cooked, stirring occasionally in between, about 8-10 minutes.
Add the methi leaves, and mix it well.
Next, add ground coriander and red chilli, mix well. Cover and cook for about 5 minutes.
Finish off the dish with a squeeze of lemon juice. Mix well, serve hot with chapathi or as a side with rice and curry of your choice and some salad.