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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!















How long will the bottles last in the fridge (after the second ferment, without the scoby)?
Generally 6 to 8 months! You can read more on storing kombucha here 😀
Hi,
I’ve been making kombucha for the last few months with only green tea and I want to switch over to black tea. Will my scoby and starter liquid from my green tea kombucha be ok to use for the new black tea batch? I was also thinking of doing a ratio of 75 black:25 green tea for my 2nd fermentation. Do you think that will be ok? Thanks SO much for your help!
Yep this would be fine! I’ve even switched to complete black from green without a problem. Happy brewing!
Hi Sarah, What a great resource! It’s been a great guide to follow.
I am just passing one of my scoobabies onto my sister and wondered if a Kilner dispenser jar (like the one in the first photo) is okay to use for the first fermentation? You said not to use a metal or plastic container but the tap thing seems to be made of one of those materials. Just wondering if it isn’t that much of an issue
As long as the tap is made from stainless steel then it’s okay! 😀
Hi,
Thank you for your recipe! So far it seems like everything is going well. 🙂 I was wondering if you can bottle your kombucha in old GTs bottles during the second fermentation step.
Thanks!
Yes you can! 😀
Do you have suggestions for making lavender kombucha.?
Sure do! Check out this recipe I wrote for making lavender buch 😀
I have been following your instructions and have been so happy with my kombucha. I am now ready to scale up and make more at a time. I bought a glass 3 gallon jar with a spout for easy pouring but the spout is metal. Will this cause problems with my kombucha or SCOBY? Thank you so much.
Hi Caren! The metal needs to be stainless steel for brewing. If it’s not, you can usually buy a new spigot online and just switch it out.
This is really tbe best instruction on making scoby to kumbucha, all the steps. Iv been searching the net as some many recepies dont give the full story
Thank you
So happy to hear it, Geraldine! 😀 Happy brewing!
Hi Sarah
Thanks again for the help. Nearly at my second fermentation…….soooo excited. Just wondering when you say to use the plastic bottle as a gauge. I can still flavour and drink that yes?
Yep, correct! 😀
Hi, I can’t get the original kombucha. I was wondering if I could use the GTS ginger kombucha as my starter instead?
If that’s all you can get your hands on then it’s your best bet (but here are my tips for where to find unflavored).
Thank you so much for this amazing guide!!! It has been so easy to follow and answers so many of my questions. And the comments are similarly SO helpful, thank you for taking the time to go through it. I do have one thing I can’t quite figure out. Is there any reason to physically handle the SCOBY? I noticed in comments you mentioned you could use the liquid from making the SCOBY as starter tea for the first fermentation. If you are using a jar that has measurements on the side, couldn’t you siphon off up to 2 cups of it, leave the new SCOBY in that liquid, and then pour in the new sweet tea from there? No need to handle and expose to extra bacteria? Don’t want to make a dumb mistake but am a little nervous to handle the SCOBY and ruin it!
Yep that’s a great way of doing it (and actually how I have started doing it most of the time now)!