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Kombucha: How to Brew This Fermented, Sparkling Black/Green Tea Drink

Updated on May 25, 2017
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Occasionally Chris will have something to say about food preparation, but only if he has tried it and had good results.

A glass of Kombucha Made From Black Tea, With Ice

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Introducing, Kombucha

When my son told me he was brewing a batch of kombucha, my first reaction was to respond with bless you or gesundheit. But then he explained that kombucha is a fermented, naturally effervescent, sweetened tea that can be flavored with a variety of natural ingredients. I tried his ginger, blueberry-chamomile and honey flavors and have been a thoroughgoing fan of kombucha ever since.

Kombucha Poll

Before reading this article, had you ever heard of kombucha?

See results

Regarding the Claimed Health Benefits of Kombucha

I enjoy kombucha simply because I like how it tastes. I love the natural fizziness and the strong flavors my son infuses into his batches. Many people tout what they see as health benefits to drinking kombucha, and those benefits, or at least some of them, may be real. The evidence for most of these claims is anecdotal, but so are the claims that there are no health benefits. No clinical trials have been performed, so no categorical statements can be made by either side. If brewed properly, in clean conditions, kombucha can be a safe, delicious beverage that replaces soft drinks, energy drinks and even alcoholic beverages. In that sense, kombucha is a healthy choice, in my opinion.

Kombucha Culture with SCOBY

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Kombucha Availability

Kombucha can be purchased in most grocery stores and organic food stores across America. Look for it in the refrigerated section along with soft drinks. It will only be sold in the alcohol section of the store if the alcohol content of that particular brand is above 0.5%.

What is a SCOBY?

Brewing kombucha is a natural process. A colony of bacteria and yeast is used to produce kombucha. This colony is known as a SCOBY (resembles a pancake), an acronym taken from the descriptive phrase, symbiotic colony of bacteria and yeast.

The specific microbes (bacteria and yeast) in a SCOBY can be different from batch to batch and from producer to producer. Some common microbial populations are contained in the following table.

Microbial Symbiosis: Bacteria and Yeasts Working Together

Yeasts
Bacteria
Saccharomyces-metabolize sugars
Gluconacetobacter xylinus-most common bacteria in kombucha; oxidizes alcohol to acetic acid
Brettanomyces2-produces alcohol or acetic acid
Lactobacillus2; anaerobic production of lactic acid from sugars
Zygosaccharomyces kombuchaensis3-Unique to kombucha; metabolizes sugars; produces alcohol and carbonation
Pediococcus2; fermentation of sugars to lactic acid
 
Gluconacetobacter kombucha-Unique to kombucha; feeds on nitrogen from tea, produces acetic acid, gluconic acid and the SCOBY

Kombucha Culture 400X

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Bacteria and Yeasts: A Symbiotic Relationship

The relationship between these bacteria and yeasts is called symbiosis. This means that each depends on and supports the other. Together, the bacteria and yeasts use sugar as a food source and produce gluconic acid, alcohol and natural effervescence. Gluconic acid is what makes kombucha different from apple cider vinegar. Most Kombucha contains about 0.5% alcohol, just slightly more than what is found in a lot of the orange juice we drink.

Somebody Get the Bird a Kombucha

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Kombucha and Sugar

The sugar in kombucha does not serve the same purpose as it does in soft drinks. Coke, Pepsi and other soft drinks add sugar to give the beverage a sweet flavor. Sugar in kombucha is added as a food source for the SCOBY as it carries out the task of fermentation (culturing). If a maker of kombucha reduces the amount of sugar in a batch, he is simply starving the culture.

The bacteria/yeast combination, or SCOBY, convert sugar to gluconic acid which is the component that makes kombucha different from apple cider vinegar. It is the breakdown of sugar that gives kombucha its characteristic tang (acids) and fizz (natural effervescence).

A Beer Drinking Pig? Somebody Get the Pig a Kombucha

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Kombucha and Alcohol

Alcohol is the byproduct of fermentation. Kombucha is not made for the purpose of achieving an alcohol content, but to produce the acids and effervescence that characterize this beverage. The alcohol content in kombucha is typically around 0.5%, but may rise to 0.8% if not refrigerated. I quickly scanned a table showing the alcohol content of many varieties and brands of beers and ales. The range was from 3.4% to 10.2%. One would have to consume about seven bottles of kombucha to equal even one bottle of beer with the lowest alcohol content. This is why kombucha, when kept under 0.5% alcohol content, is not considered an alcoholic beverage in most places.

Kombucha and Caffeine

It is generally accepted that properly brewed kombucha contains about 1/3 the amount of caffeine as does a cup of black or green tea. Caffeine and sugar contents are reduced the longer the tea is fermented. This is because the bacteria and yeasts (SCOBY) consume both sugar and caffeine. A well brewed, eight ounce serving of kombucha made from black tea should have about 10-25 mg of caffeine. Kombucha made with green tea should contain about 2 or 3 mg of caffeine per serving.

Kombucha Anyone?

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Another Kombucha Poll

Does kombucha sound like a beverage you would like to try?

See results

Choosing Teas and Sugars

The basic ingredients in kombucha are black or green teas or a combination of the two. Sugar is added as food for the bacteria and yeasts. A small amount of kombucha and a SCOBY from a previous batch (or another brewer) are also added.

The tea must contain the leaves of the tea plant (camellia sinensis), i.e. any black, green, white or oolong teas.

The sugar must be organic. Non-organic residues will prevent fermentation. White or off white, organic cane sugars (no brown sugars) are best.

Brewing Time (By Brewer Scott Mills, Used With Permission)

After 7 days (of brewing), taste it to see how it's progressing (we use a turkey baster to sample batches). It should taste pleasant, lightly acidic and sweet. If you're happy with it, bottle it up! If you think it needs to go a bit longer, taste it after three more days. There's no hard-and-fast rule on how long kombucha should ferment, so let your palate be your guide.

Ingredients

  • 7 cups Water, For tea
  • 7 cups Water, Cold
  • 8 (eight) (or 2tbsp loose leaf) Teabags, Black or green or combination
  • 1 cup Sugar, Organic cane
  • 2 cups Finished kombucha, From previous batch or another brewer
  • 1 (one) SCOBY, From previous batch or another brewer

Ginger Kombucha

Ginger added to kombucha is a great combination. If you are brewing kombucha for the first time, I highly recommend adding ginger to the mix. Scrub a 2 to 3 inch piece of ginger until it is clean, but don't peel it. Chop it, grate it, or put it into a food processor until you have enough for one teaspoon of puree per bottle of kambucha. Add the ginger just before bottling.

Source

Dark Amber Bottles for Your Kombucha

CASE OF 12 - 16 oz. EZ Cap Beer Bottles - AMBER
CASE OF 12 - 16 oz. EZ Cap Beer Bottles - AMBER

Sunlight kills the probiotics in kombucha. Bottling your brew in dark amber bottles is the best defense.

 

Step by Step Instructions by Brewer Scott Mills (Used with Permission)

  1. First, put 7 cups of water in a small pan on the stove uncovered (leaving it uncovered allows any chlorine in the water to evaporate). Heat it to about 180 degrees, or whatever the tea box recommends.
  2. Once it's hot, remove it from the heat and put all the teabags in to steep for 15 minutes. Squeeze them out into the pot as best you can once they're done steeping -- you want as much flavor out of the tea as possible.
  3. With the teabags out, stir in the sugar until dissolved.
  4. Add the other 7 cups of cold water to the pot, bringing your volume up to 7 cups.
  5. Let this sweet tea cool uncovered until it comes down to below body temperature (cooler is fine too).
  6. Now, pour the sweet tea into your clean gallon jar and add the 2 cups of finished kombucha. Stir.
  7. Finally, you'll gently grab the SCOBY (clean hands!) and place it in the jar with the sweet tea. Don't worry if it sinks. Cover the jar tightly with the cloth and rubber band, label it with the date, and place it in a warmish spot away from direct sunlight.
  8. After 7 days, taste it to see how it's progressing (we use a turkey baster to sample batches). It should taste pleasant, lightly acidic and sweet. If you're happy with it, bottle it up! If you think it needs to go a bit longer, taste it after three more days. There's no hard-and-fast rule on how long kombucha should ferment, so let your palate be your guide.
  9. You can bottle it and let it sit for a week or so on the counter to carbonate, or you can filter it into another jar and put it directly into the fridge for drinking.
  10. At this point, you should save 2 cups of finished kombucha to start your second half-gallon batch. The SCOBY can live in this cup of kombucha for a few days until you brew your next batch. Better yet, brew on the same day you bottle.

SCOBY

Source
Nutrition Facts
Serving size: 8 ounces (240 ml)
Calories 30
Calories from Fat0
% Daily Value *
Fat 0 g
Saturated fat 0 g
Unsaturated fat 0 g
Carbohydrates 7 g2%
Sugar 2 g
Fiber 0 g
Protein 0 g
Cholesterol 0 mg
Sodium 10 mg
* The Percent Daily Values are based on a 2,000 calorie diet, so your values may change depending on your calorie needs. The values here may not be 100% accurate because the recipes have not been professionally evaluated nor have they been evaluated by the U.S. FDA.

The Art and Craft of Brewing Your Own Kombucha

There are many articles for you to read about the claimed health benefits to drinking kombucha, but I have attempted to steer away from that particular emphasis. I present you with a safe (if brewed properly), flavorful, effervescent, satisfying drink which can, if one chooses, replace soft drinks and alcoholic drinks.

The art and craft of brewing your own kombucha can be a challenging and rewarding experience which yields not only a unique beverage, but also increased knowledge of the natural process of fermentation.

By the way, please go back to the top and rate this "recipe" for kambucha.

References

  • Scott Mills, Kombucha brewer in northwestern Michigan (And my son)
  • Wikipedia
  • http://www.housekombucha.com/drupal/what-kombucha
  • http://whatiskombucha.com/
  • http://www.livescience.com/44440-what-is-kombucha.html
  • http://www.culturesforhealth.com/kombucha-yeast-bacteria

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    • cam8510 profile image
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      Chris Mills 17 months ago from St. Louis, MO until the end of June, 2017

      Genna, Thanks for stopping by. I hope you get a chance to try kombucha sometime.

    • Genna East profile image

      Genna East 17 months ago from Massachusetts, USA

      I never heard of kombucha before this. Thank you for this helpful info and interesting recipe.

    • Jasmeetk profile image

      Jasmeet Kaur 17 months ago from India

      sounds good.. will try..

    • annart profile image

      Ann Carr 17 months ago from SW England

      That's ok then - I'll give it a go! Thanks for telling me; even the smell of tea puts me off! Not very English, am I?!

      Ann

    • cam8510 profile image
      Author

      Chris Mills 17 months ago from St. Louis, MO until the end of June, 2017

      Ann, you won't be tasting any tea. :) The fermentation produces several, healthy acids and that overpowers the tea. Some brewers use just a little ginger, others use more. My son's is strongly flavored. There are countless flavors available.

    • annart profile image

      Ann Carr 17 months ago from SW England

      I'd never heard of kombucha but it sounds interesting; I'll have a look on our supermarket shelves to see if we have it here. Trouble is, I don't like tea but the ginger element might disguise the taste of the tea I suppose. I'll try anything once; can't say I don't like it if I haven't tried it!

      Interesting information here, Chris, as well as the recipe.

      Ann

    • cam8510 profile image
      Author

      Chris Mills 17 months ago from St. Louis, MO until the end of June, 2017

      Deb, it's also like friendship cakes where you pass on some of the batter, or something like that. The SCOBY can be given to another person to start their own batch so they don't need to wait for one to grow. Thanks for reading.

    • aviannovice profile image

      Deb Hirt 17 months ago from Stillwater, OK

      This is great. At least now I finally know what kombucha is. Reminds me of monkey bread, which lasts forever on yeast content. Must be the same principle.

    • cam8510 profile image
      Author

      Chris Mills 17 months ago from St. Louis, MO until the end of June, 2017

      Shauna, if you go to an organic food store, sometimes they have kombucha on tap, and you can sample it. I hope you enjoy it when you do get to try it. Nice to see you here today.

    • bravewarrior profile image

      Shauna L Bowling 17 months ago from Central Florida

      I've never heard of Kombacha. I'm not a soda drinker, so I do wonder if there are any health benefits to this beverage. It sounds like it would be refreshing. Normally, if I want a fizzy drink, I pop open a can of naturally flavored sparkling water. However, if I come across someone I know who is drinking Kombacha, I'll ask for a sip.

    • cam8510 profile image
      Author

      Chris Mills 18 months ago from St. Louis, MO until the end of June, 2017

      ambernoora, I'm glad you liked the article. Give it a try. You might it enough to pass it on to a friend.

    • cam8510 profile image
      Author

      Chris Mills 18 months ago from St. Louis, MO until the end of June, 2017

      MsDora, Thanks for reading. I hope you enjoy your first bottle of kombucha.

    • ambernoora profile image

      Amber Noora 18 months ago from Kuwait

      Interesting article, and interesting recipe. Thank you for the step by step procedure about making this. Would like try ASAP

    • MsDora profile image

      Dora Isaac Weithers 18 months ago from The Caribbean

      Very interesting! And yes, I would like to try on your recommendation. Thank you.

    • cam8510 profile image
      Author

      Chris Mills 18 months ago from St. Louis, MO until the end of June, 2017

      Ruby, you can buy some kombucha from the grocery store or an organic food store, but if it is a nation wide brand, it may not have the flavor or fizz that a home brew would have. The national brands had to sacrifice some quality in order to ship nation wide. You could ask at a local organic food store if someone brews locally. Or brew your own. Thanks for reading.

    • cam8510 profile image
      Author

      Chris Mills 18 months ago from St. Louis, MO until the end of June, 2017

      Christine, Good luck brewing kombucha this winter. Scott is the expert of the family, so I get all my questions answered by him. I'm sure he is familiar with Lee Stevens. Scott has mentioned Bloom Ferment and their product.

    • cam8510 profile image
      Author

      Chris Mills 18 months ago from St. Louis, MO until the end of June, 2017

      Eric, It's good to hear you are familiar with kombucha. Brown sugar produces a yeasty kombucha and may shorten the life of the SCOBY because it is less refined and contains molasses. Good luck with your brewing.

    • always exploring profile image

      Ruby Jean Fuller 18 months ago from Southern Illinois

      I've never heard about kombucha tea. I wonder if I would like it? Thanks for the recipe.

    • profile image

      christinemariezzz 18 months ago

      ...if you don't mind Chris, I'm gong to comment as well as vote before reading your article thoroughly.

      I have Lee Stephens book :Kombucha Revolution on my Kindle, have you per used that? ...maybe it's cited in your hub...

      Well, gotta go, but the subject is noteworthy at this point. I've gathered a small amount of equipment late Summer to experiment myself this Winter.

      Kombucha is an exciting study, my granddaughter is less than 3 and her mother, my oldest is teaching her about Scoby.

      I helped Bloom Ferment this Summer with their MI product.

      Got a phone interview, I'll read your hub real soon!

      ~Christine

    • Ericdierker profile image

      Eric Dierker 18 months ago from Spring Valley, CA. U.S.A.

      Oh boy I love my Kambucha. We use a very similar recipe around here. My elder son just taught me how to do it - or brew it. I do not understand the no brown sugar part and we are careful not to let metal touch anything other that the pot of hot water. It is weird but the SCOBY is like a favorite plant.

      Thanks for laying it out so well.

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