Thoroughly wash and peel the sweet potatoes. Slice them into even fry shapes, about 1/4 inch thick.

Soak the cut fries in a bowl of cold water for 30 minutes to remove excess starch.

Drain the fries and lay them out on paper towels. Pat them dry thoroughly.

In a large bowl, toss the dried fries with cornstarch until lightly coated.

Drizzle with olive or avocado oil and sprinkle in seasoning. Toss until fully coated.

Preheat the air fryer to 380°F for 5 minutes.

Place the fries in a single layer in the air fryer basket and cook for 15-20 minutes, shaking every 5 minutes.

Check for desired crispiness and cook for an additional 2-3 minutes if needed.

Remove fries from air fryer and sprinkle with extra salt while hot.