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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. Sandra Savoie says:

    I am on day 5 & no sign of anything yet .When you say “add store bought kombucha “,do you mean the bottles we see in the health food section ?

    1. Sarah says:

      Hi Sandra! Yep it should be the refrigerated bottles of kombucha. It may help to use one that you see floaties in (little stringy bits which are actually baby SCOBYs). But give it a few more days and see, otherwise I would try a different brand than you did the first time.

  2. Diane says:

    5 stars
    Question: I missed the answer -do I need to use a glass funnel to pour stage two fermentation into my amber bottles?

    1. Sarah says:

      Hi Diane! That’s not necessary. Very brief contact with clean metal or plastic is okay (you just want to avoid exposing it to those materials for too long).

  3. Suzanne says:

    This is so helpful! What are some good flavor combinations?

    1. Sarah says:

      Thanks Suzanne!! I love playing around with juices and fruit purees (like strawberry ginger, mango pineapple, or mango cayenne). I’ll be posting some more detailed flavor ideas here soon, stay tuned! 😀

  4. Vanessa says:

    Thanks for sharing! How long does a batch last?

    1. Sarah says:

      Hi Vanessa! You can store the finished ‘buch in the fridge for a few months (though it never lasts that long for me, we drink it too fast!)

  5. Carisa says:

    5 stars
    Clear instructions and great recipe, everything worked out perfectly. Been experimenting with the final fermentation process and am loving all the flavors I can make!

    1. Sarah says:

      Yay! So happy to hear, Carisa! 😀

  6. Cece says:

    5 stars
    Wow. I’m a lover of kombucha and have been wanting to have a go at making my own. After googling the process I found your site. Thank you so much for all this information and explanation. It seems a little daunting but I really want to give making it a go.
    I am in USA and am thinking about seeing if Natural Grocers have the Scoby starter but wondered if you have a recommendation of a good beginners starter? Sadly I don’t know anyone who makes their own to get a starter surrogate.
    Once again thank you.

    1. Sarah says:

      Hi Cece! So exciting that you’re getting started with kombucha! The SCOBY is actually incredibly easy to make yourself. You just need store bought kombucha (the drink, not the SCOBY) to get you started (see the first part of this article for instructions). Let me know if you have any questions as you get started! 😀

  7. Kristin says:

    Hi Sarah – I used your recipe last night to start a SCOBY. Only, it was getting late and I forgot to check the water to make sure it had cooled to room temperature. I didn’t remember to check until after I had already poured into my two jars with the store bought kombucha. The tea was still warm at that point – not hot but definitely warm. Is it ruined? Do I need to start over?

    1. Sarah says:

      Hi Kristin! If it wasn’t HOT hot, the kombucha may have been okay. I would give it a week or two and see if anything begins to form on top, then you’ll know if you need to restart 🙂 I’ll cross my fingers for ya!

  8. Cece says:

    Sarah, thanks so much for taking the time to reply. Although I did read all your instructions I seemed to think you’d meant get a ‘starter kit’ from the store. I didn’t realise you meant just buy a plain kombucha (bottle) from the store.
    All I need to do know is scour the thrift stores to try to find a gallon jar or a couple of half gallon jars to get going. I can’t wait to get this going.
    Thanks again. Will report how I get on….. just need to find some big jars.
    Cece x

    1. Sarah says:

      Sorry for the confusion! Yep, you just need the drinkable stuff 🙂 Have fun getting started!!

  9. Curt Conklin says:

    Can u use a cup of bulk Splenda instead of sugar? Awful lot of calories in a cup of sugar!

    1. Sarah says:

      Hi Curt! This is one of few recipes where you really cannot use sugar substitutes. BUT you won’t actually be consuming that whole 1 cup of sugar. The sugar is food for the bacteria and yeast. They’ll basically eat it all up and produce wonderful things like acidity and carbonation, and the finished kombucha will be mush lower in sugar as a result. 🙂

  10. Gerry says:

    5 stars
    I’m on my first second fermentation and everything is going great. Thank you so much for putting these directions together!

    1. Sarah says:

      Yay so exciting!! Enjoy popping open the bottles soon! 😀