01 - Place potatoes in a large pot, cover with cold water, and add a pinch of salt. Bring to a boil, then reduce heat and simmer for 12–15 minutes until tender. Drain well and allow to steam dry for 2 minutes.
02 - Mash the potatoes until smooth. Stir in butter and milk until fully incorporated and creamy.
03 - Add the sliced scallions, salt, and pepper. Mix well.
04 - Gently fold in the flour until a soft, slightly sticky dough forms.
05 - Turn the dough onto a lightly floured surface. Pat into a disk about 1/2 inch thick.
06 - Cut into rounds using a 2.75 inch cutter or shape into triangles.
07 - Heat a large nonstick skillet over medium heat and melt a knob of butter. Fry the potato cakes in batches for 3–4 minutes per side, until golden and crisp. Add more butter as needed.
08 - Serve warm, topped with extra butter or alongside eggs, smoked salmon, or bacon.