Techniques
Sugar binds free water molecules, creating hypertonic environment that inhibits microbial growth while concentrating flavors.
Acetobacter bacteria oxidize ethanol into acetic acid under aerobic conditions, creating sour liquid with 4-8% acidity.
Yeast metabolizes sugars into ethanol, CO2, and flavor compounds under anaerobic conditions.
Osmotic dehydration via salt draws moisture while nitrate reductase converts nitrates to nitric oxide, fixing color and inhibiting Clostridium botulinum.
Osmotic pressure differential drives salt and water exchange across cell membranes, denaturing proteins to increase water retention.