Boil the potatoes.When they are still warm, peel and mash them and keep aside.
Add the dry mango powder, crushed black pepper, red chili powder, chopped green chilies, coriander leaves, garam masala powder, cumin powder and chaat masala powder and salt.
Mix the whole filling well.
Make small to medium rolls of the filling depending on the size of the bread
Taste and add more salt or spice powders if required.
Take a slice of bread and dampen it with water,squeeze the water from the bread.
Place the filling in the center of the bread.
Roll the bread and close the edges so as to get an even outer cover.
Make all bread rolls this way and keep aside.
Heat oil in a kadai.Fry the bread rolls till they become crisp and golden in color.
Drain the bread rolls on kitchen paper tissues to remove excess oil.
Serve the bread rolls with tomato sauce or green chutney.