In a large bowl, combine warm water, honey (or sugar), and yeast. Let sit for 5-10 minutes until frothy.

Add flour and salt to the yeast mixture. Mix until a shaggy dough forms.

Cover and let the dough rest at room temperature for 12-18 hours until doubled in size and bubbly.

Flour a surface and turn out the dough. Shape into a round loaf and let rest for 30 minutes.

Preheat oven to 450°F. Bake in a Dutch oven for 30 minutes with the lid on, then remove lid and bake for an additional 15-20 minutes.

Cool on a wire rack before slicing.