01 - Preheat oven to 425°F. Line a baking sheet with parchment paper or dust lightly with flour.
02 - In a large mixing bowl, whisk together flour, baking soda, and salt until thoroughly blended.
03 - Create a well in the center of the dry ingredients. Pour buttermilk into the well and stir with a wooden spoon just until a shaggy, sticky dough forms.
04 - Turn dough onto a lightly floured surface. Gently knead briefly only until it holds together—overworking will toughen the bread. Shape into a round, flattened loaf approximately 2 inches thick.
05 - Place loaf on prepared baking sheet. Use a sharp knife to cut a deep cross pattern about 1/2 inch deep across the top.
06 - Bake for 30 to 35 minutes until loaf develops a golden-brown crust and sounds hollow when tapped on the bottom.
07 - Transfer bread to a wire rack. Allow to cool for at least 30 minutes before cutting to prevent crumb from becoming gummy.