01 - Place cut potatoes in a large bowl of cold water and soak for 20 to 30 minutes to remove excess starch.
02 - Drain the potatoes and pat them completely dry using a clean kitchen towel.
03 - Toss the fries with olive oil, sea salt, and black pepper until evenly coated.
04 - Preheat the air fryer to 380°F for 3 minutes.
05 - Place fries in a single layer in the air fryer basket; cook in batches if necessary to maintain crispiness.
06 - Cook fries in the air fryer for 15 to 20 minutes, shaking the basket halfway through, until golden and crisp.
07 - Season with additional sea salt to taste and serve immediately.