01 - Wash and peel the potatoes. Using a mandoline slicer or sharp knife, slice them very thinly, approximately 1–2 millimeters thick.
02 - Place the sliced potatoes in a large bowl of cold water and soak for 10 minutes to remove excess starch.
03 - Drain the potato slices and thoroughly pat them dry with paper towels to remove all moisture.
04 - Heat vegetable oil in a deep fryer or heavy-bottomed pot to 350°F (175°C).
05 - Fry the potato slices in small batches, turning occasionally, for 2 to 3 minutes or until they are golden and crisp.
06 - Remove the chips with a slotted spoon and drain on paper towels. While hot, sprinkle with fine sea salt and optional seasonings.
07 - Serve immediately to enjoy optimal crispness.