Prep Time 30 minutes mins
Cook Time 40 minutes mins
Resting Time 20 hours hrs
Total Time 21 hours hrs 10 minutes mins
Freshly milled flour ferments faster and absorbs water differently, so watch the dough rather than the clock and adjust bulk time and hydration as needed—if the dough feels stiff, add a splash more water; if it feels weak and overly sticky, shorten bulk or add a few more folds. Keep your starter strong by feeding it with some fresh-milled flour for a day or two beforehand, and aim to use it at its bubbly, just-peaked stage. Controlling dough temperature (around 24–26°C / 75–78°F) will make fermentation more predictable; you can use slightly cooler water or a warmer spot in the kitchen to fine‑tune it. For a milder flavor, shorten the cold retard; for more tang and deeper aroma, extend it up to about 18 hours. Store the cooled loaf cut-side down on a board for the first day to preserve the crust, then wrap loosely in a towel or paper bag, and always slice with a sharp serrated knife to avoid compressing the crumb.