Kombucha Fermentation

Key Takeaways

• Composition includes steeped tea, added sugar, and a symbiotic culture of yeast and bacteria that drives fermentation.
• Fermentation can generate ethanol, creating variable alcohol content that may trigger beverage-alcohol classification depending on concentration.
• Fruit juice or flavoring additions change fermentable substrate and can increase post-packaging alcohol formation if residual sugars and active microbes persist.
• Process controls and analytical testing are central for consistent ABV, consumer safety, and compliant labeling under Alcohol and Tobacco Tax and Trade Bureau guidance.