Description
Ancient Mesopotamian bakers maintained a mixed culture of wild yeast and lactic acid bacteria in a wheat‑barley starter that fermented at ambient temperatures to leaven and preserve bread.
Technical
The yeast (likely *Saccharomyces cerevisiae* or *Candida milleri*) metabolized fermentable sugars to ethanol and CO₂, while lactic acid bacteria (e.g., *Lactobacillus sanfranciscensis*, *Leuconostoc* spp.) produced lactic and acetic acids, lowering the pH to 3.5–4.5. This acidic milieu inhibited spoilage microbes and contributed to the bread’s flavor and crumb structure.
Science
Primary Reaction
Fermentation of starches to ethanol, CO₂, lactic acid, and acetic acid
Sensory Profile
Aroma ()
earthyvinegarynuttywarmbreadyfermented grainslightly fruity
Origin & History
Civilization