01 - Slice peeled sweet potatoes into fries approximately ¼ inch thick.
02 - Submerge fries in cold water for 30 minutes to eliminate excess starch, then drain and dry thoroughly using paper towels.
03 - Transfer fries to a large bowl and toss evenly with olive oil. If desired, sprinkle with cornstarch and toss again to coat.
04 - Add sea salt, smoked paprika, garlic powder, and black pepper to the bowl and toss until the seasoning is evenly distributed.
05 - Set air fryer to 380°F and preheat for 3 minutes.
06 - Place fries in a single layer inside the air fryer basket, working in batches if necessary to avoid overcrowding.
07 - Cook fries for 16 to 18 minutes, shaking the basket halfway through to ensure even cooking and crispiness.
08 - Optionally sprinkle with additional sea salt and serve immediately with preferred dipping sauces.