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Have you ever wondered how to brew kombucha at home? This easy guide will teach you how to transform tea into kombucha in just a few easy steps! This is the most popular guide to brewing kombucha on the internet and has helped over 10,000 home brewers make kombucha in kitchens around the world. Yours next?

It’s a big day everyone! The day your intestinal microbiota have been begging you for. The day you say goodbye to expensive store-bought kombucha. The day you become a brewmaster!
The goal of this guide is to be your one stop shop for homemade kombucha brewage, from SCOBY-less to fermented perfection. No hopping around the internet or buying unnecessary gear. No fuss. No confusion. Because making homemade kombucha is so simple, and I hope after reading this you’ll give it a whirl! Let’s hop right to it.

Meet The Brewer
Hey friends, I’m Sarah! I’m in love with home-brewing kombucha and have helped thousands of people all over the world make kombucha in their homes! I created an entire website dedicated to brewing kombucha called Brew Buch, and run an online community of over 50,000 brewers called Kickass Kombucha Brewers (I’d love for you to join)! If you have any questions about brewing, please drop a comment at the end of this post – I personally read and respond to them daily!
The process looks like this:
This post will go into detail about each step in the process of making kombucha. For succinct instructions and metric measurements, jump to the printable recipe card at the end of this post. The general order of things goes something like this (you can jump around this tutorial by clicking the links below):
- Make SCOBY (1 to 4 weeks) – to make the “mother”
- First Fermentation (6 to 10 days) – to make the actual kombucha
- Second Fermentation (3 to 10 days) – to carbonate the kombucha
Before we start, here are some general notes that are consistent throughout the whole homemade kombucha process.
- No metal or plastic containers. Metal can react with the acidic kombucha, while plastic can house nasty bacteria.
- Clean is key. 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 sneaks in it could ruin your batch (and make you pretty sick).
- Temperature plays a big role. Fermentation goes a bit quicker in warmer temperatures and a bit slower in colder.
- No mold zone. 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.

Step 1: How to make a kombucha SCOBY
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. Yes, it’s hideous…but it’s the very essence of kombucha! And the best part? You can make one at home! You’ll need:
- Water: Tap water is just fine here!
- White Sugar: Feeds the yeast and bacteria—don’t sub with other sweeteners.
- Black Tea: Provides nutrients for fermentation. Black tea works best for a strong, healthy SCOBY.
- Raw, unflavored kombucha: Contains live cultures that kickstart the SCOBY growth. Look for one with sediment at the bottom!
To make a SCOBY, you’ll brew sweet black tea, let it cool, then mix in raw kombucha. Cover and ferment at room temperature for 1 to 4 weeks until a ¼-inch SCOBY forms. Keep the SCOBY in its tea until you’re ready to brew your first batch! Jump to recipe for printable instructions.

Which brand Is best?
Our tried and tested store-bought brand is the GT’s “Pure”. You can find it in most natural food stores.

Important Notes For Making A SCOBY
- Only black tea. Similarly, the SCOBY doesn’t grow as well with green or fruity teas. By all means, once your SCOBY is big and strong, you can use green tea, but for now, stick with black. The SCOBY doesn’t like decaf tea and will not grow as well if fed it (SCOBY = my spirit animal).
- No honey. Honey can contain botulism bacteria that, when grown exponentially as bacteria and yeast tend to do in kombucha, can be dangerous.
- Don’t mess with it! You won’t see anything but a few bubbles in the first few days. But then one day a thin, translucent layer will form, eventually thickening into a full on SCOBY.

Step 2: The first fermentation
So you’ve got a newbie SCOBY and you’re ready to get this komboo-choo train rollin’. This first fermentation is where you actually make the kombucha. You’ll need:
- Water: Tap is fine!
- White Sugar: Feeds the SCOBY and bacteria during fermentation.
- Black or green tea: Black tea is most common, but green tea adds a lighter flavor.
- Unflavored kombucha: This has the live cultures and acidity needed to start your fermentation.
- SCOBY: Your live culture pellicle.
To do the first fermentation, you’ll brew sweet tea, cool it, and add it to a jar with your SCOBY and starter kombucha. Cover and ferment at room temp for 6–10 days, tasting around day 6. Once it’s slightly tangy and not too sweet, reserve 2 cups as your starter and move the rest to second fermentation. Jump to recipe for printable instructions.


First Fermentation Tips
- In this step, unlike in the making of the SCOBY, you can use other teas besides black. Feel free to experiment with green, white, oolong, or combinations of them. Fruit teas should be mixed with a few black tea bags to ensure the SCOBY mama gets what she needs to thrive.
- Once the SCOBY gets to be about an inch thick, peel off a few layers to create a second SCOBY (you can share the love and gift this to a friend!)

Step 3: The Second Fermentation
The final step and negotiably the best part of the process! The second fermentation is where the real magic happens. It’s where you can play around with sweet, fruity kombucha flavors that will not only make your homemade kombucha taste better than store-bought, but will carbonate the kombucha! You’ll need:
- Homemade kombucha from the first fermentation
- Sweetener (fruit, honey, or sugar). Here are a few ideas per 1 cup kombucha:
- 1 to 2 Tbsp mashed fruit or fruit juice
- 1 to 2 tsp honey
- a piece of candied ginger
Strain the kombucha and bottle it with your chosen sweetener, leaving some headspace. Let it ferment at room temperature for 3 to 10 days to build fizz, then strain out fruit if needed and refrigerate to chill and stop fermentation. Jump to recipe for printable instructions.


Second fermentation tips
- The more sugar/fruit you add, the faster the kombucha will ferment and become carbonated.
- Your jars can explode if the pressure becomes too high! For your first few batches while you’re still getting the hang of how kombucha reacts to your environment, bottle a portion of it in a plastic bottle. This will act as a gauge for how the others are doing. When the plastic bottle is rock solid, the rest are probably done. “Burp” them by opening each to release some pressure, then place them in the refrigerator to slow fermentation.



The Simple Guide to Kickass Kombucha
Equipment
- Glass Jar (1 gallon or larger)
- Clean Cloth (like a dish cloth or paper towels)
Ingredients
Making a SCOBY
- 7 cups water, 1.6 L
- 4 bags black tea, or 1 Tbsp loose tea
- ½ cup white sugar, 100 g
- 1 cup unflavored kombucha, this should be unpasteurized, unflavored store-bought kombucha, 235 mL
First Fermentation
- 14 cups water, 3.5 quarts, 3.3 L
- 8 bags black or green tea, or 2 Tbsp loose leaf
- 1 cup white sugar, 200 g
- 2 cups unflavored kombucha, from a previous batch or store-bought kombucha, 470 mL
- 1 SCOBY
Second Fermentation
- Kombucha, from the first fermentation
- Sweetener or flavor
Instructions
Making Kombucha SCOBY
- Make Tea: Bring 7 cups water to a boil in a clean pot. Remove from heat and add 4 bags black tea. Allow tea to steep for about 15 minutes. Remove tea and stir in ½ cup white sugar. Let tea cool to room temperature.Alternatively, boil only 2 cups of water and add the remaining 5 cups of cold water once the tea has steeped and sugar has been added. This will quicken the process.

- Add Starter: Add 1 cup unflavored kombucha then pour everything into a large glass jar.

- Ferment: Cover with a clean cloth and secure with a rubber band. Set somewhere dark and room temperature (70-75°F, 21-24°C) for 1 to 4 weeks, until a ¼ inch (½ cm) SCOBY has formed.

First Fermentation
- Make Tea: Bring 14 cups water to a boil in a clean pot. Remove from heat and add 8 bags black or green tea. Allow tea to steep for about 15 minutes. Remove tea and stir in 1 cup white sugar. Let tea cool to room temperature.Alternatively to quicken this up, boil only 4 cups of water and add the remaining 10 cups of cold water once tea has steeped and sugar has been added.

- Combine With Starter + SCOBY: If your SCOBY is still in the jar you made it in, use a clean spoon to push it down into the tea, then pour out all but 2 cups of the tea that’s in that jar (you can bottle the remaining tea to keep as a strong starter kombucha). Pour in your freshly made cooled tea.

- Ferment: Cover with a clean cloth and secure with a rubber band. Set somewhere dark and room temperature (70-75°F, 21-24°C) for anywhere from 6 to 10 days. Begin tasting the tea at about 6 days. It should be mildly sweet and slightly vinegary when finished.The longer the tea ferments, the more sugar molecules will be eaten up, the less sweet it will be. This process will go faster if it is warm in your house.

- And Repeat: Reserve 2 cups from this batch to use as starter kombucha for your next batch (just leave it in the jar with the SCOBY). The rest can move into the second fermentation!

Second Fermentation
- Flavor: Add your desired flavors to each bottle, then funnel kombucha into bottles, leaving about 1 inch at the top. Seal each shut.

- Ferment: Let ferment somewhere dark and room temperature for 3 to 10 days.This process will go faster if it is warm in your house. Carefully open bottles to prevent volcanoes. You can do this over a bowl with a baggie over the top just in case!

- Serve: If desired, strain out flavorings before serving. Place bottles in the fridge to slow the carbonation process and to chill before serving.

Nutrition
Nutrition information calculated by Sarah Bond, degreed nutritionist.
Supplies Needed for Making Kombucha
- Large Glass Jug: It should hold at least 1 gallon (buy on Amazon or in most homeware stores)
- Fermentation Bottles: These bottles have a tight seal specifically designed to keep the carbonation in (hellooo fizz!) (buy flip-top bottles here or collect and reuse GT’s bottles)

About the gear
Above is a list of the supplies needed to make kombucha. These are affiliate links, meaning I may earn a commission if you make a purchase. I’ve only included products I know and trust, and have included multiple buying options for each. I personally use and love the products from Kombucha.com. For 10% off their online store, comment below and I’ll get our secret code to you!















Thanks for this! About to start the process today, so I’m jumping the gun a bit with this question, but when it comes time to bottle it, along with adding a fruit or fruit juice, can I also add a capsule of spirulina powder or blue majik powder?
So exciting, have fun brewing! I haven’t actually added powders before, but I would probably treat them similarly to chia seeds and stir them in just before serving (or after the sweetener/fruit carbonation stage, so when you go to put them in the fridge). Let me know if you have any questions along the way!
I own a coffee shop and would love to add this to my menu. I have a couple of question: The recipe calls for:
(2 cups unflavored starter tea (from previous batch or store-bought kombucha) 470 mL)
Does the starter tea come from making the SCOBY?
And when I use loose tea do I put the loose tea in a bag or just take a tablespoon of loose tea and add to the jar. Sorry for the questions, but I just want this to come out kick ass:)
Such an exciting addition to the menu!! If this is your 1st batch, your starter tea should optimally come from a store bought kombucha (the tea used to make the SCOBY is quite old/acidic). After you get your batches going you can use starter tea from pervious batches 😀
And I would put the loose tea in a bag so you can strain it out before fermentation.
Let me know if you run into anymore questions, happy to help! 😀
How can I get a copy of this in PDF form?
Enter your email into the box at the top of the post and a PDF will be emailed to ya 😀
What if you can’t find unflavored Kombucha at the store?
Great question Suzanne! Unflavored is really best because it is 100% kombucha (opposed to containing juice) and will therefore give you the best shot of success. If you can’t find it anywhere, I would suggest starting with a kombucha that has as minimal flavoring as possible (and be sure you see some “floaties” in the drink, these will help catalyze the process).
I was given a SCOBY last week. I’d like to start using it. I went and got everything I needed yesterday, except for the starter tea. I struggled to find it anywhere, all the Booch sold where I live is flavoured. What would you suggest, is there a substitute? Not much liquid came with the SCOBY.
Hi Monica! Unflavored kombucha seems to be harder to find these days. I would suggest using all the tea (what little there is) that the SCOBY came in + whatever minimally flavored kombucha you can get your hands on. Just be sure to look for “floaties” in the tea. These are a sign that the tea will stimulate the SCOBY growth. Happy brewing!
Hello! I’m starting to make my first batch of tea with a SCOBY I got from a generous friend who has been brewing for a while. I am going to be brewing in some 1 gallon glass jars, but he was brewing in big, wide mouthed 5-gallon buckets, so as you can imagine, the SCOBY he gave me is huge! I want to cut it down to fit into my jars, do you have any tips on this? I know a lot of places say to avoid using metal when brewing, but would cutting the SCOBY with a steel knife hurt it in any way? Also, should it fit perfectly in the jar or can I cut it a bit smaller and let it grow to the shape it needs? Thanks for all of your help!
Great question, Amanda! You can cut the SCOBY in half/squares and add it to your smaller jars. It will grow into the shape of your jars. Metal should be avoided for long term exposure, but for cutting it’s perfectly fine to use a metal knife.
Happy brewing! 😀
Hi, can you send me the pdf? I’m excited to try this 🙂
Thanks
Hi Karen! If you enter your email into the box at the top of the post the PDF will be emailed right to ya 🙂
I can’t wait to try this myself, but I do have one question? When you are making the scoby, do you pour in half of 16 oz store-bought kombucha, or half of 1 cup into the sweetened black tea?
You’ll need 1 cup (8 oz) total. If you’re making it all in one jar, it can all go in that. If you’re splitting between two jars then pour 1/2 cup into each 😀
I just started brewing my kombucha and I am doing fine with my first two batches. I read somewhere if we don’t handle the process correctly it can be dangerous to health, do have any additional info? Also my son is autistic and suffer gut issues. Could Kombucha help him, and it what proportion. Thank for your time and answers.
Happy to hear your first batches went well! Indeed, if you don’t ensure things are very clean then it could lead to bacterial growth (which is why we use very clean hands/equipment). But by just keeping things clean, the acidity of the kombucha will also do it’s part to kill off any other bacteria that may slip in. And with that said, you will generally know if your kombucha has gone bad (for example, mold growths on the SCOBY).
I honestly don’t know much about the autism/gut connection so I don’t want to give you any false information. I searched a bit and I think this could be a good starting point for your with some scientific references. Hope this helps some and enjoy the kombucha! 😀
Thank you so much