In a mixing bowl, mash boiled potatoes. add chopped onion in it.
Now in a tadka pan, add cumin seeds, fennel seeds, coarsely crushed coriander seeds, pinch of hing and chopped green chilli. saute it.
Now add turmeric powder and mix well. Add tadka into potato masala.
Then add red chilli powder, coriander powder, dry mango powder, garam masala, salt and coriander leaves. Mix well.
Spicy and tasty aloo masala is ready