In a mixing bowl take the flour.Add the salt and oil.
Mix with your hand and start adding water little by little until and knead until it forms a soft pliable dough.The dough should be firm when you poke your finger.
Boil potatoes and mash it.
In a skillet heat oil and add cumin seeds.
Once it splutters add the green chili and ginger and saute for a minute.
Add the spices.Mix well and add the potatoes.
Mix and allow to cool.