01 -
Set the oven temperature to 200°C. In a large mixing bowl, whisk together the all-purpose flour, sugar, baking powder, baking soda, and salt until evenly combined.
02 -
Grate the frozen unsalted butter using a cheese grater or cut into small cubes. Use a pastry cutter or two knives to blend the butter into the dry ingredients until the mixture resembles coarse crumbs with clumps.
03 -
Stir in the shredded sharp cheddar and chopped chives. Pour in the buttermilk and gently mix until just combined to avoid a dense texture.
04 -
Lightly flour a clean work surface and knead the dough briefly. Form the dough into a circle approximately 4 cm thick. Cut the circle in half and then into 4 to 5 wedges according to desired portion size.
05 -
Place the wedges on a parchment-lined baking sheet. Brush the tops lightly with buttermilk to promote browning.
06 -
Bake in the preheated oven for 20 to 22 minutes until the tops are golden and a toothpick inserted into the center comes out clean. Transfer the scones to a wire rack to cool before serving.