Kombucha Recipe

Making your own kombucha at home sounds intimidating, but it’s surprisingly simple. Once you taste the fizzy, tangy, homemade version—fraction of the cost and no plastic waste—you’ll never go back to store-bought.

I’ve been brewing for over three years, and this recipe is the one I share with every friend who wants to start. It requires patience (about 7–10 days), but active work is only 30 minutes. Let me walk you through it step by step.

What Is Kombucha and Why Make It Yourself?

Kombucha is a fermented sweet tea, powered by a SCOBY (Symbiotic Culture Of Bacteria and Yeast). The SCOBY eats sugar and transforms plain tea into a lightly effervescent, slightly sour, probiotic-rich drink.

Here’s why home brewing beats buying:

Cost – A bottle of store kombucha costs $3–5. Homemade runs about $0.50 per bottle.
Flavor control – Adjust sweetness, fizziness, and tartness to your taste.
Endless variations – Second-ferment with fruit, ginger, herbs, or spices.
Less sugar – Most of the sugar gets consumed by the SCOBY, leaving just 2–4g per serving.

No special equipment needed. Just clean glass jars, tea, sugar, and a healthy SCOBY.

Kombucha Ingredients (Simple and Clean)

You can find a SCOBY online, from a friend, or grow your own from a bottle of raw, unflavored kombucha (takes 2–4 weeks). For this recipe, assume you have a SCOBY plus 1–2 cups of starter liquid (the strong fermented tea from a previous batch).

Ingredient	Amount	Notes
Filtered water	4 quarts (1 gallon)	Chlorine can harm the SCOBY
Black or green tea	8 bags or 2 tbsp loose	Use plain tea, no flavors or oils
Granulated sugar	1 cup (200g)	White sugar works best; do not substitute honey in first ferment
SCOBY	1 (about 4–6 inches wide)	Can be thin or thick—both are fine
Starter liquid	1½ cups	From previous batch or bottled raw kombucha

For second ferment (flavoring):

Fresh fruit (berries, mango, ginger)
Fruit juice (no preservatives)
Herbs (mint, basil, lavender)

Step-by-Step Kombucha Brewing Method

Follow these steps exactly for a reliable, fizzy result. Sterilize everything that touches the tea after brewing—soap and hot water are enough; no need for hospital-grade sanitizers.

First Fermentation (7–10 days)

Brew the sweet tea – Bring 2 quarts of water to a boil. Remove from heat, add tea bags, and steep for 5–10 minutes (longer = stronger tea). Remove tea bags. Stir in sugar until fully dissolved.
Cool it down – Add the remaining 2 quarts of cool filtered water to the hot tea. This speeds cooling. Wait until the mixture is below 85°F (29°C). Hot tea will kill your SCOBY.
Transfer to jar – Pour cooled tea into a clean 1-gallon glass jar. Gently slide in the SCOBY and pour in the starter liquid.
Cover and rest – Cover the jar with a tightly woven cloth (or coffee filter) and secure with a rubber band. This keeps out fruit flies while letting air flow.
Ferment – Place the jar in a warm, dark spot (70–80°F is ideal). Leave it alone for 7 days. After day 5, taste a little using a straw (sip from below the SCOBY). It should be sweet-tart. Let it go longer if still too sweet.
Bottle time – When it tastes pleasantly tangy (like tart iced tea), remove the SCOBY and 1½ cups of liquid (this is your starter for the next batch). Reserve both in a covered glass container.

Second Fermentation (2–3 days) – For Fizz & Flavor

Prepare flavorings – Add chopped fruit, ginger, or juice to clean flip-top bottles. Use about 10% fruit by volume (e.g., 1 tbsp berries per 8 oz bottle).
Fill bottles – Pour the plain fermented kombucha into bottles, leaving 1–2 inches of headspace. Seal tightly.
Carbonate – Leave bottles at room temperature for 2–3 days. Check carbonation by chilling one bottle for 4 hours, then opening. If it’s not fizzy enough, wait another day.
Refrigerate – Once carbonated, move all bottles to the fridge. This stops fermentation. Drink within 1 month.

Video Guide 📺

Kombucha Brewing Mistakes to Avoid

Even experienced brewers have batches go wrong. Here’s how to prevent common failures.

Using chlorinated water – Chlorine kills the good bacteria. Use filtered, spring, or boiled-then-cooled tap water (boiling removes chlorine).
Adding sugar after fermentation – Never add sugar directly to finished kombucha without a second ferment sealed bottle—it can explode from excess pressure.
Letting it ferment too long – Beyond 14 days, kombucha becomes vinegar. Still usable for cooking, but not pleasant to drink. Taste every 2 days after day 6.
Skipping starter liquid – The acidic starter prevents mold. Always include at least 1 cup per gallon. If you don’t have starter, buy raw unflavored kombucha (like GT’s Original) and use that.
Mold fear – Mold looks fuzzy, blue, green, or black. Healthy SCOBY forms a new tan/white layer (pellicle) that may look weird but is not fuzzy. When in doubt, toss everything and start fresh.

Nutritional Benefits of Homemade Kombucha

A standard 8-ounce serving of home-brewed kombucha (unflavored) contains:

Nutrient	Per 8 oz serving
Calories	30
Total Sugar	4–6 g
Carbohydrates	7 g
Probiotics	Multiple strains (Lactobacillus, Brettanomyces, etc.)
Organic acids	Acetic, gluconic, lactic acids (gut-friendly)
Caffeine	~10–15 mg (from tea)

Values vary based on fermentation time and added flavors. Second ferment with fruit will add more sugar.

Frequently Asked Questions

Do I need a SCOBY from a special source?

No. A healthy SCOBY is a rubbery, pancake-like disc. You can buy one online, get it from a friend, or grow your own by letting a bottle of raw kombucha sit at room temperature for 2–4 weeks until a new SCOBY forms. Avoid dehydrated or “instant” SCOBY powders—they often fail.

Why is my kombucha not fizzy?

Lack of fizz usually means: not enough sugar in second ferment, bottles weren’t sealed tightly, or fermentation temperature was too cold (below 68°F). For reliable fizz, add ½ teaspoon of sugar or a few raisins to each bottle before sealing.

Can I use honey instead of sugar?

Not in the first ferment. Honey has antimicrobial properties that can weaken the SCOBY. Use plain white sugar. The SCOBY consumes almost all of it, so the final drink is low in sugar. For second ferment, honey is fine.

How do I know if my kombucha has gone bad?

Trust your nose and eyes. Good signs: vinegar smell, new layer forming on top, stringy brown bits (yeast strands). Bad signs: fuzzy mold (any color), foul smell like garbage, or slimy texture beyond normal SCOBY consistency. When in doubt, throw it out.

How long does a SCOBY live?

Indefinitely, if cared for. Between batches, store the SCOBY in a covered jar with 1–2 cups of starter liquid at room temperature. If you stop brewing, keep it in the fridge in starter liquid for up to 3 months. To revive, bring to room temperature and feed with fresh sweet tea.

Final Thoughts

Brewing kombucha at home is one of those skills that feels magical the first time it works. You turn humble tea and sugar into a living, bubbling, gut-friendly drink—all with a creature that looks like a pancake from another planet.

Start simple. Follow the recipe exactly for your first batch. Don’t obsess over perfect fizz or flavor right away. Once you master the basic method, the world of fruit, spice, and herb infusions opens up. Ginger-lemon, blueberry-basil, mango-chili—you name it.