Kombucha starts as any other sweet tea. Black or green tea is brewed and sugar is stirred in. Once cooled down, the tea is combined with a SCOBY, an acronym for the fungus that helps ferment the tea: Symbiotic Culture Of Bacteria and Yeast. The SCOBY is a circular biofilm that is pale in color, has a fleshy texture, and is creepily squishy. It’s similar to the “mother” that’s used to make vinegar (and in fact, kombucha tastes similar to a good-quality vinegar).
But the most important thing about the SCOBY is that it contains active cultures, which helps the tea ferment and gives kombucha its alleged probiotic content.
References
American Heart Association. (2021). Added sugars.
Chakravorty, S, et al. (2016). Kombucha tea fermentation: microbial and biochemical dynamics. International Journal of Food Microbiology.
Ernst, E. (2003). Kombucha: a systematic review of the clinical evidence. Forsch Komplementarmed Klass Naturheilkd.
National Center for Complementary and Integrative Health. (2023). Irritable bowel syndrome: in depth.
Villarreal-Soto, SA, et al. (2018). Understanding kombucha tea fermentation: a review. Journal of Food Science.
U.S. Department of Agriculture. (2022). Tea, kombucha.
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