01 - Using a mandoline or sharp knife, slice the potatoes into very thin rounds approximately 1/16 to 1/8 inch thick for optimal crispiness.
02 - Rinse the potato slices in cold water to eliminate excess starch, then drain and pat completely dry using clean kitchen towels or paper towels to ensure proper frying.
03 - Heat the oil in a deep, heavy-bottomed pan or deep fryer to 340°F, maintaining consistent temperature throughout the frying process.
04 - Working in small batches to prevent overcrowding, carefully add potato slices to the hot oil. Fry for 2-3 minutes, turning occasionally, until golden brown and crispy.
05 - Remove chips using a slotted spoon and transfer to a paper towel-lined tray to drain excess oil. Immediately season with sea salt while hot, adding pepper if desired.
06 - Allow chips to cool completely on the tray to achieve maximum crispness. Store in an airtight container if not serving immediately to maintain texture.