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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?

Girl in yellow overalls holding bottle of kombucha.
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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.

Smiling woman holding two glass bottles filled with orange tepache, standing indoors with shelves and jars in the background.

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):

  1. Make SCOBY (1 to 4 weeks) – to make the “mother”
  2. First Fermentation (6 to 10 days) – to make the actual kombucha
  3. Second Fermentation (3 to 10 days) – to carbonate the kombucha
@liveeatlearn

It’s Day 3 of Fermentation Week! Let’s make kombucha 🍺 Have you ever wondered how to brew kombucha at home? My 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? (The full guide is at the link in my profile!) #kombucha #kombuchalover #kombuchabrewing #kombuchaontap #fermentationstation #FermentationMagic #lactofermentation #FermentationFun #fermentationworkshop #fermentationisfun

♬ Piel De Azúcar – 𝙕𝙘 𝙢𝙪𝙨𝙞𝙘 🎧

“Excellent recipe. I’ve tried ten or more online for comparison and this one has the best flavor balance. Not at all vinegary and not too sweet. Will be using for my base from now on.” -Katherine

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.
Girl in yellow overalls next to many bottles of kombucha.

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.

Girl holding a bottle of kombucha.

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.

Girl in yellow overalls holding a kombucha SCOBY.

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.
Girl holding a kombucha 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!)
Girl in yellow overalls next to many bottles of kombucha.

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.
How to open a bottle of kombucha.
Worried about your bottles turning into volcanoes when you open them? You can place them over a large bowl and cover them with a baggie while opening them. This will contain any potential mess!
Girl in yellow overalls holding bottle of kombucha.
Questions? Leave a comment below! Sarah (food scientist and head brewer around here) personally answers comments daily.

The Simple Guide to Kickass Kombucha

4.92 from 391 ratings
Cook: 21 days
Total: 21 days
Servings: 16 cups
This is the most popular guide to brewing kombucha on the internet and has helped over 10,000 home brewers make kombucha in their kitchens! Question? Drop a comment below this recipe – Sarah personally answers comments daily!

Equipment

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
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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.
    Making sweet tea.
  • Add Starter: Add 1 cup unflavored kombucha then pour everything into a large glass jar.
    Adding starter kombucha to a pot.
  • 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.
    Girl holding a kombucha SCOBY.

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.
    Making sweet tea.
  • 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.
    Pouring kombucha into jar with a SCOBY.
  • 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.
    Jar of kombucha in the first fermentation.
  • 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!
    Girl in yellow overalls next to many bottles of kombucha.

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.
    Adding flavor to kombucha.
  • 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!
    Opening a bottle of kombucha.
  • Serve: If desired, strain out flavorings before serving. Place bottles in the fridge to slow the carbonation process and to chill before serving.
    Pouring a bottle of kombucha.

Nutrition

Serving: 1cup (depends on fermentation length) | Calories: 50kcal | Carbohydrates: 12g | Sodium: 13mg | Sugar: 12g

Nutrition information calculated by Sarah Bond, degreed nutritionist.

did you make this?Leave a comment below and tag @liveeatlearn on social media! I love seeing what you’ve made!

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)
Carbo cap kombucha lids.
You can also use these carbonation lids to prevent explosions. They allow your brew to get to a predetermined PSI and let any excess pressure release automatically.

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!

Eat vegetarian cookbook.

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2,006 Comments

  1. Molly says:

    First off, thank you Sarah for all the great instructions. 🙂 My SCOBY grew pretty well (I thought) in 8 days. I prepped my sweet tea and when I pulled the SCOBY out, it was thinner than I thought and still had a few holes in it. My container wasn’t quite large enough so I had to split the tea into two jars (a big and little one) so I carved off about 1/4 to put in the smaller jar and left the bulk of it for the big one. Sooo…. I’m thinking this will all be okay, but maybe take longer to ferment. Do you think that may be true or did I just screw it up? Or perhaps I should learn my lesson and just let the things really grow?
    Thanks again!

    1. Sarah says:

      This should be fine! Now you’ll just have two SCOBYs – just let them grow to be a little thicker and you’ll be good to go!

  2. Heather Smith says:

    Im so frustrated, discovered today that me beautiful scobi has fruit flies 😪😪😪 i guess i have to start over

  3. Soleil says:

    I have a stupid question, and everybody is more than welcome to laugh at me, because I sure am! I had someone kindly gift me a scoby yesterday and I put it in the fridge!! 🤦‍♀️ I don’t know what I was thinking. I’m rushing home now to take it out (I’m at the store buying starter tea) is my scoby ok or did I ruin my kombucha before even starting??

    1. Sarah says:

      No stupid questions here! It should be fine with such a short time in the fridge, just use it as normal 😀

  4. Erica says:

    5 stars
    Everything in one place! Ilove to print this to share with a friend who is new to homebrewing kombucha when I gift them with a baby scoby.

    1. Sarah says:

      So happy to hear it, Erica! Love that you’re sharing the joy of kombucha with your friends 😀

  5. Taylor says:

    Hi! I really excited to try this out but I have a few questions first.
    1. Any black tea? English breakfast, earl grey? Or does it have to be just “black tea”?
    2. Once you have the scoby, after 2nd fermentation, and you can save the scoby and starter tea for another batch, where do you store it until then? In the fridge?
    3. For making the scoby, can I just use a 2L jar? Does there need to be room in the jar for any reason?

    I think that’s all the questions I can think about now. Thanks!

    1. Sarah says:

      Hi Taylor!
      1. Plain black tea is best (Earl Grey is a no no, it has added oils). More on best teas here.

      2. Best to just start a new batch right away (or within a few days). Here’s how to take longer breaks.

      3. You can use a 2L jar, no need for a bigger one 🙂

  6. Debbie says:

    Hi Sarah, thanks for these great instructions, my scoby has been growing for 5 weeks now but does not appear to be getting thicker! Should I feed him more sugar?

    1. Sarah says:

      Yes you could try adding a bit more sugar, though it may also need a bit more starter kombucha. It sounds like there probably wasn’t enough of the. bacteria and yeast in your starter to really get it going.

  7. Natalie says:

    I have a pretty dumb question! Do I have to put the finished kombucha into individual bottles, or can I just leave it in my gallon jar and serve/store it from there? I wasn’t sure if the fermentation process would be effected if I just left it in a bigger container rather than smaller ones. Trying to make my shopping list and deciding if I should pick up some bottles!

    1. Sarah says:

      You’ll need to transfer it to a separate jar from the SCOBY, ideally one that you can seal shut to form carbonation. The smaller bottles are ideal for carbonating (when you open it, it loses some carbonation – so if all your kombucha is in one jug it all loses some carbonation upon opening).

  8. Vicki Richards says:

    Hi Sarah, I’ve just bought a 8 litre dispenser jar, question is for my first ferment, do I just double the ingredients from making the 4 litre eg : 14 cups of water to 28 cups double the tea and sugar. Thanks in advance Vicki

    1. Sarah says:

      Yep exactly! Double everything, except for the SCOBY – 1 SCOBY will be enough. 😀

  9. Dillon Hill says:

    5 stars
    Great guide! I’m making this for my girlfriends birthday and I have a bit of a newbie question…

    My SCOBY split into two. There’s the big original one and then a thinner baby SCOBY.

    I was thinking about adding the baby to a new gallon container with 2 cups of starter, then keeping the original SCOBY in 2 cups starter in the original gallon container. I want to be running two F1s at a time.

    I know I will be able to start a new F1 immediately with the original SCOBY, but would that be the case with the baby in a new jar? Or should I leave it in the starter to grow bigger first?

    1. Sarah says:

      As long as the baby is about 1/4 inch thick, you can use it (along with 2 cups of starter) to start another batch! 😀

  10. Tim Landon says:

    Coffee filters work well to cover jars too

    1. Sarah says:

      Thanks for the tip, Tim! 😀