Wash potatoes really well and slice on the thinnest setting using your mandolin. Or slice by hand as thin as you can.
Place slices in to the bowl with cold water for about 20 minutes. Pat dry.
Place potatoes in the air fryer basket. Sprinkle with salt, pepper and garlic. Drizzle with oil and using tongs move them around the basket to mix up.
Close the air fryer and cook at 220F degrees for about 25 minutes. The thinner slices, the shorter cooking time. Then up the heat to 400F degrees and cook for another 5 minutes. Check your chips and shake them regularly.
Potato chips should be VERY crispy once done. Enjoy!
Watch closely chips especially if you sliced them by hand and they are all different sizes and thickness.