Mix all ingredients before you go to bed. You don't have to overdo it, Just make sure that all flour is hydrated. Cover the dough with cling film and let it ferment overnight.
The first thing to do the next morning is to preheat the oven to 480ºF / 250ºC.
Pour out the dough on a floured working surface and fold it into an elongated package. Let the dough rise for 30-45 minutes. Divide the dough into 6-8 pieces and put them on an oven plate.
Bake them for 10 to 15 minutes. They should have a nice golden brown color. Let them cool on a wire rack or eat them immediately.