What You Need to Know
A two-step biochemical process: 1) Ethanol dehydrogenase converts ethanol to acetaldehyde, 2) Aldehyde dehydrogenase oxidizes acetaldehyde to acetic acid. Requires oxygen as terminal electron acceptor (Krebs cycle). Polyphenols from raw materials undergo oxidative polymerization.
Provides acidity without citrus limitations, creates flavor complexity through esterification, and enables long-term preservation. Critical for balancing fat-rich dishes and pickling.
Key Parameters
Temperature
25°C
18°C - 32°C
Time
2-3 months
3 weeks - 12 months
Equipment
Oak barrels (traditional)Ventilated ceramic crocksSubmerged fermentation tanks with aerators
Steps
- 1.
Gastrique (France): Caramelized sugar-vinegar reduction for sauce balancing
- 2.
Escabeche (Spain): Acetic acid preserves fried fish while tenderizing
- 3.