Preheat the oven to 400°F or 200°C.

Put the potato pieces in a saucepan with cold water. There should be enough water to cover the potatoes.

Bring to the potatoes to a boil and cook for exactly five minutes.

Meanwhile, put the oil on a baking sheet with sides and heat in the oven for two to three minutes.

After no more than five minutes, drain the potatoes well.

Put the lid back on the pan and shake gently.

Remove the baking sheet carefully from the oven and set on a heat proof surface. Use tongs to carefully put the potato pieces on the baking sheet, turning them in the oil.

Put the baking sheet in the oven and set the timer for twenty minutes.

When the timer goes off, remove the baking sheet from the oven and carefully turn the potatoes once again.

Return the potatoes to the oven and cook for about 15 minutes or until golden brown and crispy.

Enjoy!