01 - Place peeled and cubed potatoes in a saucepan. Cover with cold water and add a pinch of salt. Bring to a boil, then simmer for 10–12 minutes until fork-tender. Drain well and return to the pan for 1 minute to steam dry.
02 - Mash potatoes thoroughly until smooth. Add unsalted butter and milk while hot, mixing well until butter melts and mixture becomes creamy.
03 - Stir in flour and salt. Mix until soft, non-sticky dough forms. Add extra flour if too sticky.
04 - Turn dough onto lightly floured surface. Gently knead, then shape into a round about ½ inch thick. Cut into quarters (farls).
05 - Heat non-stick frying pan or griddle over medium-low heat. Cook farls in batches for 3–4 minutes per side until golden brown and slightly puffed.
06 - Serve warm, generously spread with salted butter.