01 - Place potatoes in a saucepan of cold salted water. Bring to a boil, then simmer for 12–15 minutes until fork-tender.
02 - Drain well and return potatoes to the pot. Mash thoroughly until smooth and lump-free.
03 - Stir in butter, milk, salt, and pepper while potatoes are still warm.
04 - Add the scallions and parsley. Mix well.
05 - Sift in the flour and gently mix to form a soft, slightly sticky dough.
06 - On a floured surface, pat or roll out the dough to about ½ inch thickness. Cut into 8 rounds using a 3-inch cutter or shape by hand. Dust lightly with flour.
07 - Heat oil or butter in a large skillet over medium heat. Fry potato cakes in batches for 3–4 minutes per side, until golden and crisp.
08 - Serve warm, with extra butter or alongside eggs, smoked salmon, or a fresh salad.