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1 cup (235 mL) unpasteurized, unflavored store bought kombucha.Yes, it’s scary and alien looking and Buzzfeed did a whole article about how ugly this mama is…but it’s the very essence of kombucha! It brings the love and flavor and magic! The SCOBY (symbiotic culture of bacteria and yeast) is the mother of the kombucha, providing bacteria and yeast to ferment the sweet tea, protecting the tea from outside contaminants, and providing a loose seal to keep a bit of the carbonation in. If you see any mold growing on your SCOBY or in the tea (which I understand can be difficult to discern from the hideous SCOBY, but will generally be green, white, or black), then toss your whole batch. Fermentation goes a bit quicker in warmer temperatures, and a bit slower in colder. A recurring theme in kombucha brewing is that EVERYTHING must be CLEAN! We’re creating the perfect environment for good bacterial growth, but if a bad bacteria slips in, it could ruin your batch (and make you pretty sick). Metal can react with the acidic kombucha and hurt your SCOBY, while plastic can house nasty bacteria that you don’t want sneaking in. Before we start, here are some general notes that are consistent throughout the whole homemade kombucha process.
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