Add all the dry ingredients to a big bowl and mix together with a wooden spoon or a spatula. Add in the water, and quickly combine into a wet dough until no streaks of flour appear. The dough should be sticky but not super runny. Adjust with a little water/flour if necessary until you get the right consistency.
Place a clean towel over the bowl or cover with a lid, and let sit on the counter /room temperature for 12-24 hours.
After the resting period, you’ll now need to ‘fold’ the dough. I liken it to folding an envelope. Using a spatula, pour the dough onto a big sheet of parchment paper. It will most likely stick to the parchment and bowl, so sprinkle with additional flour to make it easier to work with. Start with the edge closest to you and fold it over towards the middle of the dough. Repeat with the other edges, and keep folding the dough over. I typically use my hands but you can use the spatula as well. Refer to this video to see what I mean by folding, although in this video they use water instead of flour to prevent the dough from sticking. If you have a bowl that’s wide and big enough you can do this process in the actual bowl as well, instead of pouring it onto the parchment paper.
Place the dough with the folds face down, and cover with the bowl. Let rest for another 2 minutes. If you decide to do the folding process in the bowl, cover the bowl with a lid or a clean towel.
Half an hour before you’re going to bake the bread, place a Dutch oven WITH A LID (very important) in the bottom rack of a cold oven. Then preheat the oven to 500° Fahrenheit (250° Celsius).
Remove the hot Dutch oven, open the lid and place the dough carefully into the hot vessel (you may need to use a spatula as the dough will still be sticky. Sprinkle a little flour on top, put the lid back on and place it in the oven and bake with the lid for 30 minutes.
After 30 minutes, remove the lid, reduce the heat to 450° Fahrenheit (225° Celcius) and bake for another 10-15 minutes until golden on top. You’ll know the bread is ready when knocking on the bottom of the bread with your knuckles and it makes a hollow sound.
Let the bread rest on a cooling rack for a while before slicing into it. Warning: It’s easy to eat the whole loaf at once!