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Kombucha brewing guides

Choose a guide for your first kombucha batch or look up a problem with fermentation, carbonation, or mold. Each guide lists its sources.

How to make kombucha at home: your first batch, step by step

Brew sweet tea, add starter liquid, and follow the first batch through tasting and bottling

Brewing 12 min read

What is kombucha? Fermented tea and the culture behind it

Fermented sweet tea: ingredients, culture, and how kombucha differs from kefir and jun

ScienceBrewing 10 min read

What is a SCOBY? How the kombucha culture ferments tea

Grow a SCOBY from raw kombucha and store spare cultures between batches

The cultureScience 12 min read

Does kombucha have alcohol? What home brewers need to know

Alcohol in shop-bought and home-brewed kombucha, and the brewing conditions that affect its level

SafetyScience 10 min read

Kombucha second fermentation: flavor, fizz and bottle safety

Bottles, flavor amounts, timing, and fixes for flat or over-carbonated kombucha.

Flavor and fizzBrewing 11 min read

Kombucha flavors: ginger and 20 combinations for bottling

Ginger amounts and 20 flavor combinations for second fermentation

Flavor and fizzBrewing 9 min read

How long to ferment kombucha: timing, temperature and taste

Use temperature and tasting notes to judge fermentation time rather than relying on a fixed day count

TimingBrewingTroubleshooting 9 min read

Kombucha pH: safe ranges, testing, and what readings mean

Test starter and fermenting kombucha, interpret the result by stage, and know the limits of pH

SafetyScienceTroubleshooting 12 min read

Is kombucha good for you? What the human research says

Human research on kombucha, reported side effects, and precautions for drinking raw kombucha

HealthSafety 9 min read

Sugar, caffeine and calories in kombucha, with lower-sugar brewing tips

Understand what remains after fermentation and limit sugar added at bottling

ScienceHealth 9 min read

Kombucha mold: how to spot it and when to discard a batch

Compare mold, yeast, and a new pellicle, and check when to discard a batch and how to restart

SafetyTroubleshootingThe culture 9 min read

Best tea for kombucha: black, green, white, and oolong

Compare black, green, white, and oolong teas for kombucha, including amounts and teas to avoid

BrewingFlavor and fizz 11 min read

Kombucha equipment: jars, covers, bottles and starter kits

Choose a safe jar, cover and bottles, then decide whether a starter kit saves you any work

Brewing 9 min read

Kombucha troubleshooting: 12 brewing problems and safe fixes

Find causes of slow fermentation, flat bottles, and off smells, plus signs that a batch should be discarded

TroubleshootingBrewing 12 min read

Continuous brew kombucha: setup, draws, and refills

Choose a spigot vessel, set a draw size, refill it, and clean it when yeast builds up

BrewingThe culture 9 min read

How long does kombucha last? Safe storage for every batch

Refrigerate finished kombucha, track each bottle and discard any batch with an uncertain history

SafetyBrewing 9 min read

Keep a record of your kombucha batch

Save your tea amounts and tasting notes in Fermenta. Set reminders for tasting and bottling, then repeat the recipe with your next batch.

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