Sourdough fermentation relies on a symbiotic relationship between wild yeast and lactic acid bacteria.

 • Wild yeast produces carbon dioxide, which leavens the dough

 • Lactic acid bacteria produce acids that create sourdough’s tangy flavor and help preserve the bread

 

This long, slow fermentation:

 • Breaks down complex carbohydrates

 • Reduces phytic acid in flour

 • Develops deeper flavor

 • Strengthens dough structure naturally

 

Unlike commercial yeast bread, which often ferments in just 1–2 hours, sourdough fermentation can take 8–24 hours or more, depending on temperature and technique.