Step 1

Preheat your oven to 428F (220C). Line a baking tray or cookie sheet with parchment paper and set aside.

Step 2

Add the all purpose flour, whole wheat flour, salt and baking soda into a large mixing bowl and stir to combine.

Step 3

In a separate bowl, combine the buttermilk and sourdough starter and stir until it's bubbly and well combined.

Step 4

Pour the buttermilk and sourdough starter liquid into the dry ingredients and quickly mix to form a sticky dough.

Step 5

Lightly dust your counter top with flour and tip the dough out. Knead the dough around 8 to 10 times. Less is more with this bread.

Step 6

Now form the dough into a rough round and place onto the parchment lined baking tray.

Step 7

Press the dough down to around 1" thick and then slash a cross on the top using a sharp knife or lame.

Step 8

Bake for 20 minutes at 428F (220C) and then turn the oven down to 392F (200C) and bake for a further 20 minutes.

Step 9

Allow to cool slightly before slicing. This bread is best eaten warm.