Bratkartoffeln (German Fried Potatoes with Bacon and Onion)

Step 1 of 6Boil and cool the potatoes

Boil the potatoes in their skins in salted water for 20-25 minutes, until a knife meets only slight resistance in the middle. Drain and leave them to cool completely — overnight in the fridge is best, as cold potatoes slice cleanly and fry crisp.