Heat oil in a pan, add turmeric powder. Quickly add potatoes and saute for 3 mins.
In a bowl add the fenugreek leaves and water, let it sit for 2 to 3 mins.
Squeezing the water out , add the leaves to potatoes along with all spices except mango powder and garam masala. Mix well with out letting the potatoes to break.
Add 1/4 cup of water and cover, Let it steam cook for 3 mins. The potatoes should be cooked all the way through. Remove from stove and add the rest of spices.
Voila...enjoy...