Please use this recipe in conjuction with the video above - https://www.youtube.com/watch?v=iyrP4GFKx9g video.
Add water, flour, salt and starter to Thermomix Bowl and Mix 10 secs/speed 4. Then knead for 4 minutes using the Dough function.
Tip dough onto a lightly floured board and stretch and fold the dough (see video) so you have a circle shape. Pop it into a lightly oiled glass bowl and Bulk ferment in a warm spot until approx double in size, (usually 3-4 hours).
Use a bench scaper and gently tip dough onto board so the underside now faces up. Gently finger press and then gently shape into a circle using the stretch and fold and drag and pull method as demonstrated in the video.
Place into a prepared banneton (see post notes on preparing your banneton) so that the top of the dough ball is now at the bottom. Cover and proof until nearly doubled.
Add a small tray to the oven and preheat to 230℃ fan.
Tip dough onto a baking sheet lined with semolina or flour.
Deeply score loaf and pop into a hot oven; add a couple of cups of water into the small tray we put in earlier to create steam. Bake for 30 - 35 mins. Cool on a wire rack. After a few hours, cut and enjoy!