Wash fresh methi leaves nicely under running water and then separate the leaves from the stems. Chop them roughly and keep them aside. If using frozen fenugreek leaves, then you can use them as-is.
Heat vegan ghee in a pan. Temper cumin seeds and when they crackle, add GF asafoetida. Then add minced green chillies, ginger paste, and garlic paste. Fry for a minute on medium flame.
Then add chopped onions. Saute till the onions turn translucent.
Then add the chopped tomato along with salt. Continue to saute till the tomatoes turn soft and pulpy. This could take 8-10 minutes on medium flame.
Now add the spices - turmeric powder, red chilly powder, coriander powder, cumin powder, and amchur powder. Add 1-2 tablespoons of water. Mix and cook for a minute.
Add the chopped methi leaves. Cook for minutes or till the methi is fully cooked.
Next, add the fried potatoes. Mix it lightly. Cook for 2-3 minutes. Taste and add salt as needed.
Lastly add garam masala, and lemon juice. Mix and take the pan off the flame.