If using leftover mashed potatoes, bring them to room temperature for easier mixing.

In a bowl, whisk together the flour, baking powder, and salt.

Add mashed potatoes and softened butter into the dry mix. Stir until a soft dough forms; add up to 2 tbsp extra flour if the dough is too sticky.

Lightly flour your work surface, divide dough in half, and shape each half into a flat round about 1/2-inch thick.

Heat a skillet over medium heat and add 1 tbsp butter or oil.

Fry each farl for 4–5 minutes per side until golden brown and crisp at the edges.

Transfer to a plate and let rest for 1–2 minutes, then cut into quarters.

Serve hot with butter, jam, or alongside eggs.

For breakfast, serve alongside fried eggs and bacon.

For brunch, add a dollop of butter and your favorite jam.

For a snack, top with smoked salmon, crème fraîche, and chives.