Take a strainer first and transfer 1 cup poha in that.
Rinse poha in running water.make sure that you do not rinse it too much or else it breaks and gets mushy. while rinsing, the poha absorbs enough water and it becomes soft.
The poha must become soft but remain intact, whole and separate.
If the poha does not become soft, sprinkle few drops of water on the poha in the strainer till they get softened.
meanwhile, chop onions and fries in small pieces.
Heat oil in nonstick pan.
Add mustard seeds and cumins. When they crackle add Curry leaves and onion.