Wash the potatoes well in water.peel the potatoes in a huge bowl mix some salt with water and keep aside,now start slicing the potatoes with a slicer and as you slice them let the slices fall in the salted water,the slices should be neither too thick nor thin.
we are adding the slices in the salt water so that they potatoes don't darken,finish off like this with all the potatoes.The water should cover the slices completely.