Willie Scannell’s Gratin of Potato and Wild Mushrooms
If you have a few wild mushrooms eg. chantrelles or field mushrooms, mix them with ordinary mushrooms for this gratin. If you can find flat mushroom, all the better. One way or the other the gratin will still be delectable.
1½ lb (700g) ‘old’ potatoes, eg. Golden Wonders or Kerrs Pinks