Chef John's Scones

1 . Stage

Preheat the oven to 400 degrees F (200 degrees C).

2 . Stage

Whisk flour, sugar, baking powder, and salt together in a mixing bowl. Cut in butter with a knife or pastry blender until mixture resembles coarse crumbs.

3 . Stage

Stir together 1/2 cup milk, currants, and sour cream in a small bowl; stir into flour mixture with a fork until just moistened and holding together.

4 . Stage

Transfer dough to a lightly floured surface and pat into a rectangle. Fold the rectangle into thirds. Turn dough a half turn, gather any crumbs, and flatten back into a rectangle; repeat once more. Cut the rectangle into eight triangular pieces and transfer to a silicone baking mat.

5 . Stage

Whisk egg and 1 tablespoon milk together in a small bowl. Brush egg wash over the top of each scone.

6 . Stage

Bake in the preheated oven until scones have risen and turned golden brown, about 15 minutes.

7 . Stage

Remove from the oven and transfer to wire rack to cool.