1. Combine the sourdough with the flour and allow to rest for 30 minutes. 2. Make a well in the centre of the dough and gradually add the water while kneading. 3. Fold in the salt and keep kneading for about 30 minutes. 4. Allow to rise for 3 hours. 5. Knead again and allow to rest for 10 minutes. 6. Roll out the dough and roll back into the shape of a loaf. 7. Dust with flour and with an office knife slit out diagonal cuts on the top part of the loaf. 8. Dust again and allow to rest for a further 30 minutes. 9. Set the oven on combi (slow fan speed) at 220°C. 10. Bake for 30 minutes.