Mix flour, yeast and salt in a large bowl.
Add warm water to the ingredients and mix until a sticky dough forms.
Cover with a towel and let it rise on the counter for 12 hours.
Preheat the oven to 500F/260C with dutch oven inside.
Turn your dough out on a floured surface, it will be flat, tuck all four sides in to form a ball and place it on a floured surface seam side down, sprinkle with more flour and cover with a towel. Don't be afraid to be generous with flour.
Let it rise for 20 minutes.
If you are short on time you can bake your bread after a 20 minute rise, and it will be a somewhat dense and hefty loaf yet still delicious. (Like mine in the pictures). Alternatively, you can let it rise for 2 more hours in order to produce a more airy loaf of bread.
Cut slits in the top of the loaf with a sharp knife approximately 1-2cm deep to allow steam to escape and create a better shaped loaf.
Take dutch oven out of the oven and carefully place your dough in it, cover with a lid and bake for 25 minutes.
Take the lid off and bake for 10-15 minutes longer to get more colour into your crust.