Peel the skin of potatoes and cut into thin slices in circle. Transfer into large vessel add chilled water till potatoes deeped.

Now rinse potatoes for 3-4 times with fresh water. Then spread on kitchen towel rub off excess water.

Heat oil in pan / kadai once hot drop some of potato chips in it dont be over crouded deep fry them till golden brown in colour from all sides.

Now drain out all potato chips into colander sprinkle rock salt powder and black pepper powder.
If you don't want black peper powder. You should skip it.
Thank you