Preheat your oven to 425°F (220°C). Grease a baking sheet or line it with parchment paper.
In a large bowl, whisk together the flour, baking soda, and salt.
Make a well in the center of the dry ingredients and pour in the buttermilk.
Stir until the dough comes together. It will be slightly sticky.
Turn the dough out onto a lightly floured surface and knead gently for about 1 minute. Do not over-knead.
Shape the dough into a round loaf and place it on the prepared baking sheet.
Use a sharp knife to cut a deep cross into the top of the dough. This helps the bread cook evenly and gives it its traditional appearance.
Bake in the preheated oven for 30-35 minutes, or until the loaf is golden brown and sounds hollow when tapped on the bottom.
Allow the soda bread to cool on a wire rack before slicing.
Enjoy your meal!