2 tart green apples, such as Granny Smith, peeled, cored
4 medium potatoes, peeled
salt and freshly ground black pepper
2 tbsp vegetable oil
50驳/1戮辞锄 butter
75驳/2陆辞锄 cr猫me fra卯che
4 free-range eggs, plus 4 free-range egg yolks
12 thick slices smoked back bacon