Cut the crust or sides of bread. With the help of rolling pin roll the bread such that it is flat.
Heat oil in the pan and add cumin
When cumin crackles add in it potato, peas, salt, chili powder, dry mango powder and chopped coriander. Let mixture cool down.
Take bread slice and spread on it the filling (do not spread thick layer)
Roll it in the shape of log and cover it with silver foil and refrigerate till (this will help it to take the shape).
Just before serving take the foil out and cut them into pieces.