Preheat oven to 200ºC/400F and greaseproof a bread tin.
Sift the flour and baking soda in a bowl. Add the salt and wholemeal flour and stir to combine.
Add in the butter and cut or rub into the flour until the mixture resembles breadcrumbs.
In a separate bowl, whisk the buttermilk, honey and egg and until well combined.
Make a well in the flour and add the buttermilk mixture, folding until a dough is formed.
Spoon into the bread tin and smooth out.
Slice a line into the center of the loaf and place in the oven to bake until golden on top, approximately 45 minutes.
Remove and allow to cool.
Slice and serve warm.
Video
Notes
Buttermilk: Buttermilk is acidic which reacts with the baking powder and activates the baking soda in the dough as well giving our bread moisture to create a soft crumb. It's best not to create your own buttermilk substitute here to ensure you get the best bread.
Loaf tin: A traditional loaf pan is ideal for this recipe, with the tin used here fitting 1 kilo or 2 pounds.