Peel the potatoes and slice them into ½cm (¼ inch) slices.
Place in a pot with cold water, covering the potatoes.
Add the salt to the water and bring to a boil.
Let simmer for ~10 minutes - the potatoes should be just soft enough to be pierced with a fork.
Drain and transfer to a bowl.
Pour oil on the potatoes and gently mix them, so all are coated and they look a bit battered but not broken.
Place in an oven tray or dish and place in an oven preheated to 220°C (430°F) for 40 minutes or until the potatoes brown. I recommend using a baking paper for easier cleaning.
After 20 minutes take the tray out and flip all the slices to get evenly baked potatoes