Remove the ends of fali and cut into around 1 inches pieces.
Wash them with cold water.
Then put hot water in them and leave aside.
Heat mustard oil in a pan.
Add potatoes.
Saute them on high heat until they get brown spots.
Remove the potatoes from the pan.
Now add onion, tomatoes, green chilli, cumin seeds, salt, turmeric powder, coriander powder, spicy red chilli powder and kashmiri red chilli powder in the pan, already having enough oil.
Mix everything well.
Put a lid and let the ingredients cook.
Do stir at intervals and mash the tomatoes.
Once oil is seen separating, add fali.
Give it a good mix.
Add water suffering enough to cook the fali.
Cover and cook it on low heat until fali and potatoes are cooked. If sabzi is cooked but still you see some water left, turn the heat to high and let water evaporate completely.
Lastly add garam masala and mix.
Labia ki fali ki sabzi is ready. Enjoy hot with roti.