Preheat oven to 425℉ and line a baking sheet with parchment paper.
In a large bowl, whisk flour, baking soda, and salt.
Create a well in the centre and add buttermilk. Stir until combined.
Transfer dough to a floured counter or table and lightly knead to form a round loaf. Add more flour in small amounts if dough is too wet and sticky.
Place the round loaf on the parchment paper lined baking sheet. With a sharp knife, score an X on the top of the loaf.
Bake for 30 minutes or until golden brown. Bread should sound hollow if tapped.
Let cool at least 30 minutes before slicing. If sliced while still too warm, moisture may evaporate and bread may become tough.
Notes
The flour is about four cups, but you'll get better results by weighing it rather than using a measuring cup.If you don't have buttermilk on hand, you can mix 1 3/4 cup milk with 1 1/2 Tbsp lemon juice.If you'd like to make this vegan, buttermilk can be made from almond milk or soy milk, to varying degrees of success. The photographed bread in this post was made with buttermilk made from almond milk.
Keyword Homemade bread, Irish soda bread, soda bread