Scottish Potato Scones

Bring potatoes and enough water to cover by 1 inch to boil and medium pot over high heat. Reduce heat to medium and simmer until potatoes are tender, about 15 minutes. Drain potatoes and return to pot. Stir over low heat until potatoes are thoroughly dried, about 1 minute. Add butter, salt, and pepper and mash until smooth (mixture should measure 1 1/2 cups). Cool to room temperature, about 20 minutes.

Stir flour into potato mixture until smooth. Turn dough out onto floured work surface and knead until smooth, 8 to 10 times. Pat dough into 8-inch circle and cut into 8 wedges. Heat 1/4 teaspoon oil in large nonstick skillet over medium heat until just smoking. Cook 4 scones until browned, 1 to 2 minutes per side. Transfer to wire rack, add remaining oil to pan, and cook remaining scones. Serve warm.