How To Brew Your Own Homemade Kombucha

May 19th, 2009 - filed under: The Food » Recipes

 

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Kombucha, that magical mysterious elixir, is actually quite easy to produce with a bit of kitchen chemistry. I wrote about Kombucha a few weeks back, after I’d finished my first batch. And as promised in that article, here’s your step-by-step guide to home brewing.

 

What You’ll Need:

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  • A living SCOBY + some starter tea
  • A large *glass* jar (no metal, no ceramic, no plastic, etc) with a wide opening (a standard 1-gallon jar, as shown at right, is best)
  • Sugar
  • Caffeinated tea
  • A very clean cloth + a rubber band
  • A steel pot and a big metal stir spoon

 

 

Prep Work

  • Most likely, the hardest part will be getting your hands on a SCOBY. You’ll just have to be creative and snoop around your city for a source. I suggest starting with Craigslist or googling ‘[your city] kombucha’. You can also try poking around your local co-op or health food store – and check the bulletin board.
  • Once you’ve secured a SCOBY (and it’s alive, floating in some starter tea), you’re on your way. Make sure your workspace is clean and at least semi-sterile. Gather and clean your tools (see above).
  • This is a long process, so set your schedule accordingly. Brewing is a good Sunday project; you can have it going while you’re gardening or cleaning or laying around naked with your sweetheart.

 

How To Brew

1)  In a large, stainless steel (non-teflon or other weird material) stock pot, boil 1 gallon of water. Keep it at a full boil for at least 10 minutes.

2)  Remove the pot from heat and add 1 1/4 cups sugar, stirring with a metal (non-plastic, non-wood) spoon. I use organic evaporated cane juice instead of white sugar. DO NOT substitute agave, honey, Splenda™, or any other sweetener. 

3)  Add the tea. Any kind, as long as it’s caffeinated. This will determine the final flavor, so if you use a cranberry green tea, you’ll get a cranberry-ish flavored kombucha. I usually use organic plain green or black tea bags. You can use bagged or loose tea, but if you use looseleaf make sure it’s in a fine-meshed infuser. You don’t want any tea leaves floating about! 

 

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4)  Steep the tea for about 4 hours, allowing the water to cool and the tea to get nice and strong. Go ahead and garden or clean or or lay around naked. When the tea is good and strong (many hours later), take out the tea bags/infuser.  

 

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5)  Double check that your widemouth glass jar is very clean, and then pour in the gallon of sweetened tea. A funnel can really help with this.

 

DON’T USE ANY METAL BEYOND THIS POINT

Metal reacts poorly with the kombucha culture. It’s not a good thing.

 

6)  Wash your hands thoroughly before handling the SCOBY.

7)  Open your SCOBY + starter  container, and pour the starter into the widemouth jar. There may be gooey strings or giblets – that’s just SCOBY stuff, and it’s fine.

8)  Fish out your SCOBY. Admire it’s alien oddity. Blow it a kiss. Give it a name (mine is Scoby-Doo). Notice that there’s a ‘smooth side’ that is lighter, and the other side is darker. The slimy dark stuff is yeast. You’ll also notice that familiar, uniquely komucha-esque odor!

9)  Now carefully slide your SCOBY into the widemouth jar, smooth-side up.  It may sink, which is okay, but it will probably float.  

 

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10)  Place the clean cloth over the top of the jar, pulling it taught and securing with a rubber band. Now you just need to tuck that sucker away for 2-3 weeks. It prefers a warm dark spot, like in a cupboard or closet. It does not like drafts or sunlight, so don’t brew your kombucha on a window sill!

11)  Adjust the brew time for your taste preference. The warmer it is, the faster it will brew. The more caffeinated it is, the faster it will brew. The longer you let it brew, the stronger and less sweet it will be. I like less sugar, so I ferment for at least 3 weeks. It’s not recommended that you brew a batch longer than a month.

 

— weeks later —

 

12)  First, you’ll need to remove the SCOBY. Every time you brew, the ‘mother’ (the original SCOBY)  grows a ‘baby’ (a new SCOBY). These names are misleading because the two are identical in every way, indistinguishable from one another. They’ll be stacked together, like two pancakes. You can either leave them be and keep on going with a double-thick SCOBY, or you can carefully separate them. If you do take them apart, each one can brew its own batch. Then you can stagger your batches for constant kombucha flow! Remember: each time you brew, the mother makes a baby.

13)  You’ll need a jar to hold your SCOBY while you’re not brewing.  Make sure the jar has a plastic (non-metal) lid.  With very clean hands, fish your SCOBY out of the widemouth jar and fold it into the storage jar. Then add enough of the new brew to completely cover it.  This is your starter tea for next time.  Store the SCOBY + starter tea in the refrigerator, indefinitely.

14)  Portion out your brewed kombucha into smaller storage containers.  I save glass bottles with plastic lids just for this purpose.  Store the tea in the fridge for up to 6 weeks.

15)  Drink!  Experiment!  Enjoy!

 

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Notes on Safety

  • Wash your hands, wash your hands, wash your hands.
  • Sometimes a culture will become contaminated.  It happens!  If your SCOBY shows anything resembling mold, TOSS IT!  If your brewed kombucha comes out smelling funny, TOSS IT!  If your kombucha ends up tasting funny, TOSS IT!  Remember, there’s only a porous rag separating your fermenting sugar water from any and all airborne bugs.  Contamination can happen, so be wise and play it ‘better safe than sorry’, okay?
  • If you want to add fruit juice to your kombucha, do it after you’ve brewed.  DO NOT add fruit juice before fermentation.
  • Don’t use bleach on any of your kombucha-making equipment. Vinegar is a great cleanser. The dishwasher (with a mild detergent) is also okay.
  • Listen to your body!  Start by drinking a little at a time.  Home brew is A LOT stronger than the store bought stuff, and the B-vitamins can get you quite heady. So take it slow and listen to your body!

 

Close-up during brewing - you can see it bubbling.

Close-up during the brewing process - you can see it bubbling away!

 

***DISCLAIMER – My dears, I cannot be held responsible for what you do with this information.  So please, use your big beautiful brains, and be thoughtful and be careful.***

 

I know there’s been a ton of interest out there, so I can’t wait to hear how this works for you guys. Make sure to report back! And LUCK!

sign-off

  • http://bonzaiaphrodite.com Sayward

    @ sarah thomas – Well, you would smell the mother when you got it started, so you’s at least have something to compare it to. It smells kind of boozy-vinegary. I’ve never smelled kombucha that’s gone off, but I feel like you would know. Also there would be mold!

    You can definitely get mothers online. I don’t know where you are but this is where I got my very first scoby, and they do ship their starter kits!

  • http://www.enjoyables.etsy.com Joya Roy

    okay, i can hardly tell you how excited i am. i just finished my first batch of lovely delicious kombucha, following your guide to get a mother SCOBY from store bought brew and then brewing from that. it’s so WONDERFUL!!!
    thank you so much for sharing this tutorial.
    i’m over the moon excited about it.
    cheers!

  • http://bonzaiaphrodite.com Sayward

    @ Joya Roy – YAY! So happy to hear that!

  • Lee Hoffman

    Hi Say, 3 weeks later I have a nice bach of Komucha complete with a new ScoBy (named Fred)
    I seperated the 2 and now have 2nice clean Starts. Will start my next batch tommorow. Thanks again. Love to Damian & Waits

    Lee

  • Jack

    Hi Sayward,
    Thank you very much for sharing the information. Do you have any idea of the sugar content of the final product. Is it about the same as the store bought version? GT’s Organic Raw Kombucha is 2g per 8 oz serving. We have to be very careful with our sugar intake. Thanks again.

  • http://bonzaiaphrodite.com Sayward

    @ Jack – It would be really hard to say, because it would depend on the strength of your SCOBY and how fast it’s eating the sugar. I would think it would be less than GT’s, as those usually have some juice added. If you want to reduce the sugar you can always brew it on the longer side. Luck!

  • Victoria

    What do you think about using glass jars with plastic spigots? I’ve read that plastic is a no-no, but I cannot find plain glass 1 gallon jars anywhere!
    this is the kind I’m talking about :
    http://www.amazon.com/JARDEN-71132-120-Watermelon-Beverage/dp/B002R9KWTG/ref=pd_sbs_k_4

  • http://www.enjoyables.etsy.com Joya Roy

    Victoria, (I hope it’s okay to answer) you can try Azure Standard http://www.azurestandard.com or Specialty Bottle http://www.specialtybottle.com . They have a great assortment of all kinds of bottles. I like their squared body flip-top 1L bottles for kombucha drinking.

    And for everyone, did you know you could leave your bottled kombucha out for a few days before refrigerating and you get a fizzier drink?? That was pretty exciting for me. :)

    BUT! if it’s been in the fridge and then warms up on the shelf again (or anywhere, if it’s taking you too long to drink it) it makes alcohol. That was news to me, too. Not wanting that effect.

    So glad for this blog post, btw. Have recommended a good number of friends here to get them started on their own. YAY!

  • http://bonzaiaphrodite.com Sayward

    @ Victoria – I have heard of people using those with success. It may not be the ideal, but it’s almost certainly better than nothing! ;-)

    @ Joya Roy – Aw, thank you! And thanks for the great tips. I like my kombucha extra fizzy. =)

  • mctagga9

    I purchased a mother from a health food store about 6 months ago. For various reasons I did not get around to brewing until about a month ago, so the mother has been sitting in a jar in the fridge submerged in some old kombucha for about 5 months.

    I started brewing finally about 3 weeks ago, but there has yet to be growth of a new scoby. Is my original mother likely dead, or just dormant? Advice?

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    It may just be slow to grow, depending on a lot of things like amount of sugar, amount of caffeine, temperature, etc. I don’t always get a new SCOBY from every batch. As long as the tea is fermenting (you’ll be able to taste and smell the difference, and it will carbonate) and there’s no mold, I wouldn’t worry about it. Just re-use the same SCOBY and after a few rounds getting it going, it’ll probably start making babies. Luck!

  • http://thebackpatio.wordpress.com Kate

    Just found this blog with very helpful brewing info! I just finished brewing and bottling my first batch. I let it brew for about 9 days (it’s been in the 60s in the evenings here, but in the70-80s during the day). My kombucha, however, is pretty sweet and has a slight yeasty smell to it. Is this normal? I know that yeast is obviously part of the brew, but didn’t expect the finished product to smell that way. … Any insight appreciated! Thanks!

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Slightly yeast is totally normal. Just as long as it doesn’t smell “off”. But yeah, I’d definitely describe a strong brew as smelling yeasty. If you’re very worried just drink a super small amount, see how you feel, and if all goes fine (which it most likely will), drink a larger amount the next day.

    Luck!

  • d l

    Thanks for the clear instructions! I’m just starting my first batch from a store bought bottle and it seems to be progessing nicely. I have a couple of questions. The store bought Kombucha does not list caffeine as an ingredient, is this just an omission? Why do you only recommend sugar and not other sweeteners? I used maple syrup. Thanks!

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    The caffeine is “eaten” by the colony, so if all goes well the finished product will have none – or very little, functionally insignificant – caffeine left in it.

    I’ve heard mixed reviews from using other sweeteners. The group that I learned from was very set on sugar only, they said they had ruined many batches trying other sweeteners. But I’ve heard from others that various sweeteners have worked just fine. I guess it depends – let me know how the maple syrup works out for you!

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    The caffeine is “eaten” by the colony, so if all goes well the finished product will have none – or very little, functionally insignificant – caffeine left in it.

    I’ve heard mixed reviews from using other sweeteners. The group that I learned from was very set on sugar only, they said they had ruined many batches trying other sweeteners. But I’ve heard from others that various sweeteners have worked just fine. I guess it depends – let me know how the maple syrup works out for you!

  • http://twitter.com/FarmerMarketVeg Ali Seiter

    Hey, Sayward! I just finished brewing my first batch of kombucha for three weeks after growing my own scoby from your “how to grow a scoby using storebought kombucha” post. I’m fairly certain that everything went well. The yeasty aroma and flavor is definitely there–very strongly, I might add! I’m used to drinking a 16 oz bottle of kombucha daily, but I may have to take it slowly at first with this homemade brew.

    The only thing I’m worried about is that I found about 4 tiny, white, squiggly bugs (maggots?) crawling along the top of my scoby. They didn’t touch the actual kombucha, though. Should I be worried about this?

    Thanks a bunch!
    -Ali.

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Eek, I’m super late getting to this – so I’ll just ask, what did you do?

  • http://www.facebook.com/profile.php?id=100000816874082 Lisa Lentil

    Namaste Sayward! I’ve been brewing Kombucha for a couple of my months now with a scoby that I got from a friend. The original mother is starting to look pretty gnarly (completely brown with a hole in it) How do I know when it’s dead? Does it just disintegrate or stop having babies? Many thanks!
    -Lisa

  • http://twitter.com/FarmerMarketVeg Ali Seiter

    I drank it! Slowly at first, like you recommend. I carefully removed the little buggers off of the Scoby before drinking the Kombucha (as I mentioned, they didn’t touch the actual drink), and haven’t noticed any adverse effects from it except for perhaps a couple mild upset stomachs which I attributed to simply the increased strength of home-brewed Kombucha from storebought.

    However, thanks to the very strong taste and smell (certainly not rancid, just a bit intense), I’m still not completely sure that I perfectly executed the entire brewing process the first time around, so I think I’m going to re-grow a new Scoby after my second batch of Kombucha is finished this Sunday.

  • Tony

    Great tutorial! I just finished my scoby (very very yeasty aroma) and began my first batch of kombucha yesterday!

    Does anybody know how long to leave a bottle of my homemade kombucha on the counter for to gain fizziness similar to GT’s?

  • Jim B.

    Hi sayward! My kombucha has been brewing for a week and a half and it’s starting to smell kind of vinegary, is this normal?

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Vinegary is pretty normal. Sort of yeasty/vinegary. If it’s been 1 1/2 weeks, you can drink it now. The longer you let it go, the more it will begin to taste like vinegar (but also the more powerful it will be)

    (also, ya know, disclaimer disclaimer, you brew at your own risk and all that jazz)

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Just 24-48 hours should be plenty!

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    The mother *should* be able to go on indefinitely, but if it’s seeming to fall apart, I’d say just use the babies and retire that old lady. ;-D

  • Karenastar

    My scoby won’t float. It’s been fermenting in a batch of tea for 3 days now. Is that normal?

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Yup! Sometimes they don’t float. =)

  • ~H~

    I’m doing it. I just started the process to make my own S.C.O.B.Y. so I can get moving onto this step. Anything for a few hours of lazy nakedness. :-)

  • Christine Musich

    I’ve been brewing for about 2 months now. When I was originally taught we were told to brew anywhere from 7-14 days. I’ve gotten my best non-vinegar taste from 6 days…here in Phoenix, AZ. What kind of flavor do you get from a 3 week brew….I would assume that the vinegar taste becomes even stronger…just curious before I set a sample one out for that long.

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    It gets very vinegar-y after 3 weeks. For me that’s okay, because I really don’t want the sugar. Plus I don’t mind the vinegar-y taste. These day I brew for between 2 and 3 weeks. It almost guarantees that the sugar is gone, but it doesn’t get TOO acidic. Hope that helps!

  • Cate Duncan

    I’ve been making kombucha for 6 months now, and although I have been using caffeinated tea and 1 cup of sugar to every gallon of kombucha, my mothers are brown, holey, and do not seem to “producing” scobies (at least not very quickly), and haven’t for a month or so. The resulting tea is also less strong then usual, and only scarcely carbonated. I do see yeast activity going on (e.g., the tea is bubbly). Temp. is about 70 at my house, and I brew 6-8 days typically. Is there something I could be doing to liven my mothers up, or have I ruined them somehow?

    Thank you for your time!

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Hmm, I don’t know what to tell you, sorry! The only thing I can think is that I’d let them go longer. 6-8 days is very very short and they may not be getting enough time to mature. I’d try 14 day cycles with some rest in between brewings. But other than that I’m not sure. Sorry!

  • Cate Duncan

    Thank you for your quick response. =) I appreciate it!

    I think I’ll give the longer cycle a go . . . thank you for your consideration. Now that I think of it, I am sure the lack of moisture in this winter weather would lower the chances of anything growing very quickly! =P

    Isn’t God so gracious to give us the blessing of foods that nourish, strengthen as well as taste wonderful? I am so humbled as I think of how much He loves us . . . to the smallest details of daily, mundane life.

    Blessings to you!
    Caitriona

  • Joleanna Bare

    drinking my first every batch! YAY! thank you it’s delish! btw my mama scobi floated to bottom of the jar and a new one grew on top of the jar…. nothing resembuling mold and its fizzy and taste like store bought hopefully this is okay as i am drinking it ;)

  • JPetrick

    I’ve been brewing kombucha for several months, now and drink it every week with great success. Last week I purchased a 1 gallon glass jar with a plastic spigot, thinking this would be easier than the old method of pouring into a funnel and spilling all over the counter, but this week it tastes a little funny (almost soapy.) Do you think the plastic spigot hurt the kombucha or is it just not ready, yet?

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    I can’t speak from experience, but the person who taught me, warned about brewing in one of those containers . . .

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    I can’t speak from experience, but the person who taught me, warned about brewing in one of those containers . . .

  • http://veganonthegogo.wordpress.com/ Teniesha @ Vegan on the Go-Go

    Hey, Sayward–I just brewed my first batch using your lovely tutorial here, and I was wondering if your kombucha is usually really carbonated or not? Mine definitely has an acidic taste, but very, very little carbonation. I brewed mine for 2 weeks. Is kombucha still effective without the fizziness? How does one achieve more carbonation?

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  • http://insertcleverdomainnamehere.tumblr.com/ Travis Johnson

    Regarding Step #3: I don’t know if anyone has mentioned it in the comment thread, but you should edit out the part about flavored teas being okay. The oils that are used to flavor teas are detrimental to the health of the SCOBY. Even if someone is using a tea with whole herb or flower flavorings, those can also be harmful. Your safest bet is to make your kombucha tea with only black and/or green tea. If you want floral or fruity flavors, wait until your plain kombucha is finished, brew a strong tea of whatever herbal/floral tisane you prefer, then blend the two when you’re bottling.

  • fitzylady

    Anyone know if kombucha can be made with herbal tea?

  • Boulder

    I am curious about the logic of two things here. What is the purpose of putting the SCOBY white side up? I find it peculiar that there would be a problem with growth if you can grow a full SCOBY out of the crud in the bottom of a jar from the super-market. Has anyone experienced trouble with not orienting the SCOBY a certain way? I just started my first large batch and just plopped it in, I am not sure which side is facing up.

    Also, another Kombucha maker suggested only using a mother 5 or so times then trashing it. What is the thought process here? Does the colony not slough out dead cells and outgrow itself or something?

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  • http://www.KombuchaKamp.com Hannah Crum

    Here is an article about increasing carbonation in your Kombucha – http://www.kombuchakamp.com/2011/01/kombucha-carbonation-for-beginners.html

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  • http://www.kalieta.net/ Colette

    Maybe that’s where I made my mistake. I used mint green tea to brew my kombucha and as a result I have a molded drink!!! Is there a way to save my scobby or do I need to get a new one? Especially when getting rid of the kombucha, I will need a starter tea. My scoby doesn’t look harmed but how can I make a starter tea to preserve my scobby until I have made a new batch of tea? Thank you for your help.

  • http://www.kalieta.net/ Colette

    Also, my jar is one of those glass dispensers, with a plastic tap. Could that also be a mistake? Should I have used a regular glass jar?

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    Just my 2 cents, but I use flavored teas all the time and so do most brewers I know, and we’ve never had any problems. So I don’t think it was the tea that caused the mold. Sometimes mold just happens!

    I would just brew some strong tea and sweeten it, and keep your SCOBY in that in the fridge until you were ready to make another batch.

  • http://bonzaiaphrodite.com/ Sayward Rebhal

    I was told not to use those.

  • http://www.facebook.com/dave.lindenbaum Dave Kombucha Lindenbaum

    Great point Travis.. it is always recommended to have a back up culture just incase the essential oils take over the tea… with that said I have had great success brewing with a blend of a good black and green tea base, and then adding in the “booster” ingredients… here’s a video I did awhile back talking about finding that balance point: http://www.getkombucha.com/kombucha-recipe