1. Wash and dice the potatoes (you don't need to peel them).
2. Put them into a turreen, add the oil, season them with salt, pepper and rosemary and mix everything.
3. Put the potatoes onto a baking tray and put it into the oven.
4. Bake them for about an hour at 200°C; turn them over from time to time.
5. As soon as the potatoes are crispy and have a golden brown color, they're ready.
6. Baked Potatoes are a good low-fat alternative for French Fries.