These scones are a bit messier to make than traditional scones, but I find the extra mess well worth the flavor. The tartness of the grapefruit is countered nicely by the slight sweetness of the barley flour. However, if the tang of the grapefruit isn’t your favorite, trying subbing oranges instead.
Yield: 4 large or 6 medium scones
Preheat the oven to 400°F (200°C, or gas mark 6). Line a baking sheet with parchment paper. In a large bowl, whisk together the barley flour, baking powder, salt, and baking soda. Zest the grapefruit and rub the zest into the flour mixture. Carefully cut the peel off the grapefruit, dice, and squeeze the juice into a bowl. Set the juice and squeezed grapefruit pulp aside. Cut the butter into the dry ingredients using a pastry blender, 2 knives, your hands, or a food processor until the dough is in pea-size pieces. In a smaller bowl, whisk together the egg white, milk, and 2 tablespoons (40 g) of the honey. Stir into the dry ingredients until the dough pulls together. Transfer the dough from the bowl to a floured surface and pat into a rough 6 × 12-inch (15 × 30 cm) rectangle. Sprinkle the grapefruit pieces over and carefully roll into a log, jelly-roll style. Squeeze and pat the log into a slightly flatter log, about 1 inch (2.5 cm) thick. Cut into 4 to 6 triangles or squares. Place on the baking sheet 1 to 2 inches (2.5 to 5 cm) apart. Whisk together the egg yolk, the remaining 1 tablespoon (20 g) honey, and 2 tablespoons (30 ml) of the reserved grapefruit juice; brush over the scones. Place the baking sheet in the oven and bake for 15 to 18 minutes, until the scones are golden and firm to the touch. Allow to rest for 10 minutes before transferring to a wire rack to cool. Store cooled scones in an airtight container at room temperature for 2 to 3 days, or freeze for later use.