Scrub the potatoes thoroughly before cutting them into thick sticks.

Boil the potato sticks in water with salt (or 1 tbsp. vinegar) for 5 minutes.

Drain the water and place the potatoes to dry on a dish towel and let them cool slightly.

Turn on the deep fryer to 160 degrees Celsius (320 degrees Fahrenheit) and fry the fries for 5 minutes. Remove the fries and let them dry/cool on a dish towel for at least 30 minutes.

Turn the deep fryer up to 170 degrees Celsius (338 degrees Fahrenheit) and fry the fries for 2 minutes and again place them to dry on a dish towel (for at least 30 minutes).

Now turn the deep fryer up to 180 degrees Celsius (356 degrees Fahrenheit), fry the fries for 2-3 minutes until they are golden and crispy.

Drain the fries on a piece of paper towel and sprinkle them with salt.

The fries are now ready to serve.