01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together the flour, sugar, baking soda, baking powder, and salt until well combined.
03 - Stir in the currants, ensuring they are evenly distributed throughout the flour mixture.
04 - In a separate bowl, whisk together the buttermilk, egg, and melted butter until smooth.
05 - Pour the wet ingredients into the dry mixture. Gently stir with a fork or spatula until a soft, slightly sticky dough forms. Do not overmix.
06 - Turn the dough out onto a lightly floured surface. Pat into a 1-inch thick round.
07 - Cut the dough into 8 wedges and arrange them on the prepared baking sheet, spaced slightly apart.
08 - Brush the tops with buttermilk. Bake for 16-18 minutes or until golden brown and a toothpick inserted into the center comes out clean.
09 - Cool slightly before serving. Enjoy warm or at room temperature.