What You Need to Know
During malting, barley grains are soaked and dried to activate α‑ and β‑amylase enzymes, which later hydrolyze starches into maltose and glucose during the mash. The resulting sugars are then fermented by ambient Saccharomyces yeasts and lactic‑acid bacteria, producing ethanol, CO₂, and lactic acid, giving the beverage a low alcohol content and mild sourness.
The Science
Primary Reaction
Starch saccharification by amylases followed by alcoholic and lactic acid fermentation