In a saucepan of boiling water, completely boil the potatoes. Let it cool.
Peel the potatoes once cool.
Grate potatoes using a grater or food processor. Add oil, corn flour, salt and pepper, and mix well.
Take a portion of the mixture, roll it into a cylinder and cut into small tater-tot pieces.
Meanwhile, preheat the air fryer at 200°C | 390°F for 10 minutes.
Spread the tater tots in the air fryer basket without overlapping.
Air fry for 12 minutes at 200°C | 390°F.
Brush with oil and cook at 200°C | 390°F for another 7-8 minutes, or until crisp.
Serve air-fried tater tots immediately with a dipping sauce.