Kombucha is a fermented tea made by introducing a SCOBY (symbiotic culture of bacteria and yeast) to sweetened tea. The fermentation produces organic acids, B vitamins, and a diverse population of live bacteria and yeasts. The acetic acid content supports digestive function, while the polyphenols from the tea base provide additional prebiotic benefits.
Why it matters
Diverse Microbe Community
Contains bacteria and yeasts not found in other fermented foods, increasing microbial diversity.
Organic Acids
Acetic and gluconic acids support healthy gut pH and inhibit harmful bacteria.
B Vitamin Production
Fermentation synthesises B1, B2, B6, and B12 — essential for energy metabolism.
Polyphenol Delivery
Tea polyphenols are partially fermented into more bioavailable forms.
How to eat it
Drink a small glass (150-200ml) with meals to aid digestion. Use as a base for salad dressings with olive oil and herbs. Mix with sparkling water for a lighter, more refreshing drink. Choose unpasteurised varieties and check sugar content — quality kombucha has less than 5g sugar per serving.
Kombucha fermentation produces a complex community of Acetobacter, Gluconobacter, Lactobacillus, and various yeasts, along with organic acids that support gut pH and inhibit pathogenic bacteria.
Source: Jayabalan et al., Comprehensive Reviews in Food Science, 2014
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