Cut the skin into small pieces after washing it thoroughly.
Add them to a cold non stick pan and turn the heat on to low.
Season with the salt, add the water and then cover and cook undisturbed for 15 minutes.
After that remove the lid and continue cooking uncovered. This process will take 45-60 minutes. Keep the heat on low.
Keep stirring the skin around every 5-10 minutes to avoid it burning or sticking.
The skin will slowly turn golden brown and start crisping up. Once it's fully crispy and crunch remove with a slotted spoon.
Strain the chicken fat form the pan and store in jar.
Both are good on the counter top for some time in air tight containers. However the chicken fat can be kept in the fridge for a month or even longer in the freezer. The skin is fine on the counter for a few days, but to store longer keep in the fridge. You can reheat in the oven.