Place your griddle/frying pan on a low heat on your hob to start warming up.
Sift the flour, bicarbonate of soda and salt into a large bowl. Make a well into the middle before pouring in the buttermilk.
Gently stir together, being caution not to mix too vigorously. Once the wet and dry ingredients have started to come together and you can no longer mix with a spoon/spatula, use your floured hands to form it into a soft, slightly sticky dough.
Turn the dough onto a well-floured surface and very gently knead it into a loose ball - try not to knead it more than 2-4 turns to do this.
Gently flatten out the dough into a circle with your hands, until about 20-25cm (8-9 inches) in diameter. Cut the circle into four triangles (farls).
Transfer the farls to your [dry] pre-heated griddle/frying pan. Allow to bake on a low heat, on one side for 8-10 minutes until golden in colour, before flipping over and repeating on the other side. Your farls should rise a little whilst baking too.
Once baked on both side, transfer to a wire rack to cool a little, before serving whilst still warm.
Notes
No buttermilk?If you are unable to get buttermilk locally, or would prefer a dairy-free option: Simply switch out the buttermilk for 250ml of milk, mixed with 1 tbsp of apple cider vinegar, or 1 tbsp lemon juice. Mix about 30 minutes before using, to allow the milk to thicken ever-so slightly.
For full explanations for each ingredient, including possible substitutions, see the Ingredients section above.
For more tips for success when making Soda Farls, see Granny's Top Tips section above.
For swaps & hacks to make these Vegan or Free-from Soda Farls, see the Free-from & Vegan section below.
Soda Farls are best enjoyed the day they are made. They will keep for a day or two in an airtight container but they won't keep their texture very well. Although you can toast them to bring them back to life a little.
If you are making Soda Farls in the US:
Plain flour would be termed as "all purpose flour."
Bicarbonate of soda would be termed as "baking soda."