What You Need to Know
The preparation involves soaking barley, grinding into a mash, boiling to gelatinize starches, and allowing spontaneous yeast and lactic acid bacteria to ferment the resulting sugars. Maltose and dextrins are converted to ethanol, CO₂, lactic acid, and acetic acid, giving the drink a low alcohol content (2–3 % ABV) and a mildly sour profile. The fermentation proceeds at ambient temperatures, where microbial activity and pH shifts drive flavor development.
Steps
- 1.
Eleusinian libation (Ancient Greece): Ritual consumption during Mysteries
- 2.
Barley groat porridge (Minoan Crete): Base for fermented breakfast dish
- 3.
Herbal digestif (Byzantine monasteries): Medicinal fermentation vehicle
The Science
Primary Reaction
Alcoholic fermentation of maltose to ethanol and CO₂, coupled with lactic acid fermentation of sugars to lactic and acetic acids