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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!















Hi Sarah! This is my first time making kombucha and your guide has made the process clear and less daunting! My kombucha is going through the first fermentation so I’ve been thinking about bottles for the second fermentation. I’m happy to buy the flip top bottles that are so popular but I’m was wondering your opinion on also using old soda bottles. The bottles have flip top lids but I can’t find any information about other people using them. While I assume it’s a risk, it seems like they should work and would be less wasteful since I already have them. Do you think its okay to try using them?
Hi Ana! Those old soda bottles probably aren’t meant to withstand a lot of pressure, while bottles meant for brewing can hold all that carbonation in (without exploding). You can always give it a shot, but you have a risk of them exploding.
Hi Sarah,
I followed the directions for making a scoby.
I am now at the first fermentation point (with just one scoby).
Can I double the water at this stage to 28 glasses (with just one scoby)?
Thank you.
You can scale up all ingredient proportionally (so water + tea + sugar). And that with 1 SCOBY should be fine. 😀
After your second fermentation. What do you do with the ‘mother’ scoby? Do you just leave it in the jar with the 2 cups from first batch and wait until you are ready to do another batch?
Thanks for all of this!
Yep! It just stays back and ferments the next batch (I like to start it that same day so it’s always working).
hi sarah!
made my first batch of kombucha with a lot of success. i have a big jar with spigot that i poured all but 2 cups out of, i was hoping to just restart the first fermentation process the day after but it took me about 4/5 days to get around to it. the left over was a little vinegary but i topped i proceeded as normal.
will this work, will it be too acidic? should i have put more sugar in? should i through it away and restart. i was hoping to not have to buy more store bought kombucha but seems i may have to to get this going
help!
This should work just fine! That 2 cups probably turned into an even stronger starter and your fermentation may go a little quicker than usual.
Thank you so much for your instructions! I’m almost done with step one & so tickled to have watched my Scoby form!!
Your site is fantastic & greatly appreciated!!!!
Ah, I’m so happy to hear it! Happy brewing 😀
Hi, so I’ve been drinking kombucha for a while now but decided that I wanted to try to make my own. I got all of the ingredients but the problem is that the biggest jar I own only holds 1/4 of a gallon. Would I be able to divide the mixture to make the SCOBY into fourths and hold it in four separate jars? There’s 16 cups in a gallon and the mixture would only make 8 cups of liquid so does the SCOBY need that space + amount of ingredients to grow or would it be okay to have like 2 cups of the mixture among four 1/4th gallon jars? Or could I just fill the two 1/4th gallon jars with 4 cups of mixture each? Thank you!
Hi Mason! You can definitely just quarter it and grow in 4 different jars (will just be a little more labor intensive).
Hopefully it doesn’t post 2 times😊, love this recipe. Question, if my container is large enough can I just double the batch? Or do Inness 2 separate batches to double
Yep, you can scale up the recipe as much as your container will allow!
Hi Sarah,
Made my first batch with a gifted scoby. It turned out great. Had to move and could not transport the gifted scoby, so I am preparing to make from scratch. Had a quick question though. For the first batch I made, I used unflavored kombucha from the store, but I also saw that you can use your own. If I am using my own, is this unflavored kombucha what is taken from the first fermentation when you reserve the scoby? Or is it the kombucha that is made during the second fermentation with a little bit of sugar only?
Hi Adrian! This can be either. Kombucha that you made from the first fermentation is the most common, but if you have kombucha that you made in the second fermentation (unflavored) that will also work. Happy brewing!
Imagine not being able to post a title without cussing in it.
There are 680 other posts on this site that do just that 🙂
Thank you for this very helpful guide. I am slowly becoming very fluent on making kombucha. I have a couple cleaning questions. When I bottle my kombucha, I have been starting my next batch right away. I didn’t clean my first fermentor jar for the first several batches because I didn’t think of it. Then last batch I started considering it, so I did. My thought is because I am constantly using the jar, I shouldn’t have to clean it every batch, am I crazy? My next question is, how should I clean the cloth on top of my jar, and how often should it be cleaned?
Thanks,
This is totally fine! I usually only clean my 1F jar when the spigot gets clogged (ever 10 batches or so). I don’t clean the cloth frequently either, usually just when it gets stained.