In the bowl of a stand mixer, combine sugar, yeast and water. Stir together and let sit for 10 minutes, or until ingredients starts to get foamy and thickens.
While the yeast is proofing, combine flour with salt in a separate bowl.
Add flour mixture to bowl 1 cup at a time and mix until just combined. Try not to overwork the dough as this will remove air pockets that make the dough airy and light.
Cover the dough and let it sit at room temperature for 8-12 hours.
Turn dough out onto a floured surface, and form into a ball.
Preheat the oven too 400 degrees and place the Dutch Oven inside while it heats for 30 minutes.
Place the dough in a greased bowl, cover with a towel and let rise again in a warm area for 30 minutes (while the Dutch Oven heats)
After dough has risen, place into the Dutch oven careful not to deflate dough. Sprinkle flour on top.
Bake for 30 minutes, then remove lid and bake 10 minutes more or until the top becomes golden brown.
Notes
Be sure your Dutch oven has a metal handle on the lid. Some hard plastic handles will smoke at over 350 degrees.