01 - Using a mandoline slicer or sharp chef's knife, cut potatoes into uniform thin rounds approximately 1/16 to 1/8 inch thickness for consistent cooking.
02 - Place potato slices in a bowl of cold water, rinse thoroughly to eliminate surface starch, then drain and pat completely dry using clean kitchen towels or paper towels—excess moisture prevents proper crisping.
03 - Pour oil into a deep, heavy-bottomed pan or electric deep fryer and heat to 340°F, maintaining steady temperature throughout frying process.
04 - Working in small batches to avoid overcrowding, carefully lower potato slices into hot oil. Fry for 2 to 3 minutes, turning occasionally with a slotted spoon, until chips turn golden brown and achieve crisp texture.
05 - Transfer chips to a paper towel-lined tray using a slotted spoon to remove excess oil. Immediately sprinkle with sea salt while hot for optimal adherence—add black pepper if desired.
06 - Let chips cool completely on the prepared tray to reach maximum crispness. Store in an airtight container at room temperature if not serving immediately.