1. Soak your potato strips in a large bowl of water for about 30 minutes. Drain and then pat with paper towels until thoroughly dry.

2.Heat you oil in a deep-fryer or large saucepan to 275 degrees F (135 degrees C). Gently add the potatoes to the hot oil and fry for about 5 minutes, stirring and flipping the potatoes occasionally. Use a slotted spoon to transfer potatoes to a paper towel-lined plate. Let cool completely.

3.Heat your oil again, but this time to 350 degrees F (175 degrees C). Add the potatoes and fry a second time until golden brown, 5 to 6 minutes.

4.Remove from the deep-fryer and blot with a paper towel. Sprinkle with fleur de sel salt to serve.