Combine all ingredients in a large bowl with a spoon. The dough will be quite messy and gooey.
Cover tightly and let sit in a warm place for 8-9 hours (or longer if your house is cool).
The dough will almost double and look very bubbly.
Mix it again really well with a spoon (it allows more flour proteins and sugars to come in contact with yeast and bacteria to do its magic). This will be a sticky mess, and it's okay.
Grease a Dutch oven and sprinkle with flour (don't skip this step, this will let your bread to come out of the pot easily).
Transfer the dough to the pot and smooth the top with very wet hands. This works very well and doesn't get your hands messy.
Allow to rise again for 2-3 hours. Smooth the top with wet hands again.
You can brush the loaf with a beaten egg yolk, if you wish.
Bake at 400ºF for 40 minutes.
Allow to cool before taking it out of the Dutch oven.