What You Need to Know
Barley starch is converted to maltose via diastatic enzymes (α-amylase, β-amylase), fermented to ethanol by Saccharomyces cerevisiae, then oxidized to acetic acid by Acetobacter aceti.
Provides tangy acidity to cut through fatty foods, essential for traditional fish-and-chips and pickling brines.
Key Parameters
Temperature
25°C
18°C - 35°C
Time
3 months
2 weeks - 6 months
Equipment
Oak barrels (traditional)Orleans method vesselsAeration pumps
Steps
- 1.
Fish-and-chips (London 1860s): Acid balance against fried fats
The Science
Primary Reaction
C₂H₅OH + O₂ → CH₃COOH + H₂O (ethanol oxidation)