Measure your starter into a bowl

Add the milk and stir to dissolve

Add the flour, the salt and the bicarbonate of soda

Using your fingertips, bring the ingredients together

Cover with clingfilm and leave for 30 minutes

Turn onto a floured surface and knead for 5 minutes

Shape into a ball and place into a lightly oiled ziploc bag

Allow to prove until doubled in size - be patient, it takes about 4 hours

Remove the dough from the bag, knock back and knead for 1 minute

Cover and leave to rest for 5 minutes

Roll to 1cm thick and cover and rest for 5 minutes

Cut into rounds - mine were 8cm as I used the biggest drinking glass I have

Place into a well floured baking tray and sprinkle the tops with flour

Cover and prove until doubled in size

Preheat the oven to 230° Celsius

Bake for 10 minutes, turning after 5 minutes

Cool on a wire rack