How to Brew Kombucha
Learn how to brew kombucha with sweet tea, SCOBY, fermentation, bottling, cleanliness, mold warning, common mistakes, troubleshooting, and FAQs.
Quick Answer
To brew kombucha, make sweet tea, cool it completely, add starter tea and a healthy SCOBY, cover with breathable cloth, ferment at room temperature until tangy, remove the SCOBY, bottle carefully, and refrigerate when flavor and carbonation are right.
Supplies Required
- Black or green tea
- Sugar
- Starter tea
- Healthy SCOBY
- Glass jar
- Breathable cloth
- Rubber band
- Clean bottles
- pH strips optional
Safety Precautions
- Use clean equipment and food-safe glass containers.
- Never add a SCOBY to hot tea.
- Discard kombucha with fuzzy mold, rotten odor, or unsafe handling history.
- Release bottle pressure carefully during second fermentation.
- People who are pregnant, immunocompromised, or have medical concerns should ask a qualified professional before drinking home-fermented kombucha.
Step-by-Step Instructions
- Step 1
Brew sweet tea
Steep tea, dissolve sugar, and let it cool completely.
- Step 2
Add starter and SCOBY
Pour cooled tea into a clean jar with starter tea and SCOBY.
- Step 3
Cover jar
Use cloth and a rubber band so air can flow while insects stay out.
- Step 4
Ferment
Keep at room temperature away from direct sun and taste after several days.
- Step 5
Remove SCOBY
Use clean hands or utensils and save SCOBY with starter tea for the next batch.
- Step 6
Bottle if desired
Bottle for carbonation, leaving headspace and checking pressure.
- Step 7
Refrigerate
Chill bottles when flavor and fizz are right to slow fermentation.
Practical Example
Example: You brew sweet black tea, cool it, add starter tea and SCOBY, ferment for 8 days, bottle with ginger, burp bottles daily, then refrigerate.
Common Mistakes
- Adding SCOBY to hot tea
- Using dirty jars
- Fermenting in direct sun
- Sealing first fermentation airtight
- Ignoring bottle pressure
- Confusing fuzzy mold with normal SCOBY growth
Troubleshooting
Kombucha is too sweet
Ferment longer and taste daily.
Kombucha is too sour
Use it as starter tea and shorten the next batch.
No carbonation
Use enough sugar for second fermentation and warmer room temperature, but monitor pressure.
You see fuzzy mold
Discard the batch and SCOBY; do not taste it.
Helpful Internal Links
FAQs
What is a SCOBY?
It is a culture used to ferment sweet tea into kombucha.
Can I brew kombucha in metal?
Use glass for fermentation and avoid reactive metals.
How long does kombucha ferment?
Often 7 to 14 days, depending on temperature and taste.
Is home kombucha risk-free?
No. Clean handling, safe fermentation, and personal health considerations matter.
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