To brew a gallon of kombucha the way that I do it (that isn't set in stone) you will need:
- Your SCOBY
- Some starter kombucha, in which you should have your SCOBY stored, plus any extra kombucha you might have saved
- One gallon or more of non-municipal water. All municipal water supplies in the US are chlorinated. Chlorine kills bacteria. We do not want to chance that enough chlorine to kill your culture could possibly be left in your water after you've boiled it. Also, MANY municipal water supplies in the US are fluoridated. Fluoride kills bacteria and, from what I've been reading, human cells... Google fluoride and health and you'll see why you wouldn't want to be even drinking fluoridated water, let alone putting it into your kombucha!
- 6 tea bags (or the equivalent in family sized tea bags or loose tea) - any combination of black and green teas. Some claim that the tannins in the black tea are essential to a proper kombucha culture, so I have been using 1 or 2 black and the rest green teas in regular sized tea bags. Again, I get organically grown tea, as that is free of any pesticide residues that might manage to get packaged on non-organically grown tea. An important note here: If you are just beginning to make kombucha, it is highly recommended that you not experiment with flavored teas or herbal teas. Some herbs and some flavorings are naturally anti-bacterial - this can kill your kombucha culture. If you want to experiment with flavored or herbal teas, my recommendation (and that of many of the other websites out there about kombucha) is to ferment only black, green or white real tea, and add the flavored or herbal teas during the bottling process. If you do experiment during fermentation you will probably want to be certain that you have at least one "back up" SCOBY so you won't have to start all over again without one
- One cup of white cane sugar - organic or just store brand works fine. This feeds the yeast in the culture. Like the alternatives to real tea above, you will want to stick with white cane sugar at least during your own kombucha brewing learning curve, as some other natural sweeteners do not have enough sucrose for fermentation, or, like honey, may contain natural anti-bacterial agents and wind up killing your SCOBY. Again, when experimenting with other natural sweeteners, be sure to have a back up SCOBY just in case
- A one gallon or larger jar (mine are 5 litres, which gives me room for error)
- A 4 cup Pyrex measuring cup or 2 quart heat resistant bowl (Pyrex has always been my choice of heat resistant glass items, and I love the 4 cup pyrex measuring cup) - depending on the method you choose when preparing your tea for fermentation, you may not need either of these items.
- A stainless steel teapot or stainless steel stock pot - stainless steel is the preferred material in which to boil water and/or brew tea as it does not leech as readily as other metals - and you do not want metals or non-stick coating materials leeching into your tea, both for your health and the health of your kombucha culture.
- Cheesecloth or other breathable woven material with a tight enough weave to keep out fruit flies and the like, cut large enough to cover the mouth of your jar with a couple of inches hanging over the edge. NOTE: If you decide to use cheesecloth, make sure that you use multiple layers. The cheesecloth that I use is already two layers - I cut enough off to triple the double layers - I have so far found this to be enough to keep out the bugs, although some people tell you never to use cheesecloth. If you are unsure or have had a fruit fly or other pest problem recently, then a piece of muslin or linen or similar tightly woven but breathable cotton type material may be a better choice for you
- A rubberband that will fit snugly around the mouth of the jar with the covering on it
- A quiet, relatively warm place out of direct sunlight, in which to put your gallon jar so the kombucha will ferment
- About one week if your jar can stay at about 75-80 degrees. Shorter if it is consistently warmer, and longer if it is consistently cooler. Some people with homes that get to under 70 degrees, particularly in the winter time, have reported over two weeks (even up to three weeks) for the fermentation process to complete
In all of the options, the differences occur early in the process - during the tea steeping portion - so once we get to the point where our formerly hot tea is at room temperature, the instructions are the same.
Preparation for any of the brewing processes:
- Make sure that your SCOBY is at room temperature. If you've refrigerated it, take it out of the fridge and leave it out for a couple of hours so that it is at room temperature before you must add it to your kombucha tea mix.
- Do the same with any kombucha starter tea you will be using.
- Be sure all of your utensils and containers are very clean. I generally wash my stuff in the dishwasher and then rinse extremely well - and in extremely hot water - right before starting the process. While you don't have to "sterilize" everything, it is pretty important for all of the items that come in contact with your SCOBY and/or the liquids to be clean and sanitary.
OPTION ONE: The full-caffeine"wait for it," long cool down method
Note: This method will have a long period of time (hours) between start and finish, although there isn't really any extra work involved, and there is no mitigation of the caffeine content.
- Using a stainless steel stock pot, boil your gallon of non-municipal water.
- Once the water has begun boiling, add your one cup of white cane sugar, stir until the sugar is completely dissolved, and turn off the heat.
- Place your 6 teabags or equivalent in family bags, or loose tea in a tea ball, into the sweetened boiled water immediately after turning off the heat.
- Let the tea steep for up to 10 minutes.
- Remove the tea bags and allow the tea to cool to room temperature.
- Once the tea is at room temperature, skip down to the steps labelled "Is it time for the SCOBY now?"
OPTION TWO: The reduced caffeine option with long cool down
Note: This option will necessitate heating more than one gallon of water and will be easiest if you use both your stainless steel stock pot AND a tea pot plus the Pyrex measuring cup or bowl.
- Heat one gallon of water in the stainless steel stock pot.
- While that is heating, boil at least one quart of water in a stainless steel teapot. Try to time this so that the teapot boils at nearly the same time as or just after the water in the stock pot.
- Once the water in the stock pot is boiling, add your one cup of white cane sugar, stir until the sugar is completely dissolved, and turn off the heat.
- Place your teabags or loose tea filled tea ball into the Pyrex measuring cup or bowl.
- Once the water in the teapot has come to a boil, pour up to a quart of the boiling water into the Pyrex measuring cup or bowl and steep the tea in that container for 30 to 60 seconds. Just count it out, because looking at the clock will probably mean it will steep too long. At no more than 60 seconds, remove the tea bags or tea ball from the measuring cup or bowl, place the tea bags/tea ball into your boiled sugar water, and throw out the tea water from the Pyrex container. The reason for this: According to several sources, the vast majority of caffeine in tea is released during the first 30 to 60 seconds that tea is immersed in boiling water. When we throw out the tea water from the Pyrex container, we will discard most of the caffeine that tea would release.
- Let the tea steep for at least 10 minutes. When I am using the "Wait for it" option, I will simply leave the tea bags to steep until the tea is at room temperature. It's just my opinion, but I feel that a lot of the flavor can be lost when you "pre-steep" to remove the caffeine, and I want to get all the possible flavor out of the tea before continuing on to the next phase of brewing kombucha.
- Once the tea is at room temperature you may remove the tea bags/ball if they are still in the tea and skip down to the steps labelled "Is it time for the SCOBY now?"
SHORTER COOL DOWN METHOD for either full caffeine or reduced caffeine options
- Boil about 2 quarts of water in either your stainless steel stock pot or teapot (teapot is easier if it will hold enough water)
- If you are using the full caffeine option, measure your 1 cup of sugar into into the 4 cup (1quart) Pyrex measuring cup or into your 2 quart bowl. If you are using the reduced caffeine option, skip this step.
- Place the tea bags/tea ball into the 4 cup (1 quart) Pyrex measuring cup or 2 quart bowl.
- Once the water boils, pour approximately 1 quart of water over your tea into your container.
- If you are using the reduced caffeine option, steep the tea for 30 to 60 seconds (count - don't use the clock - timing is important here, but just so you don't steep too long), remove the tea bags/tea ball and set aside somewhere clean. Then discard this tea water. Immediately place the tea bags/tea ball back into the Pyrex measuring cup or bowl and pour another quart or so of still close to boiling water over the tea bags. Add one cup of sugar. If you are using the full caffeine option, skip this step.
- For both methods: Stir the water gently until the sugar has completely dissolved and steep for no less than 10 minutes (longer if you are using the reduced caffeine option).
- Once you feel that the tea has steeped for long enough to be extra strong (I generally will leave it to steep for about 30 minutes, especially if using the reduced caffeine option), skip down to the steps labelled "Is it time for the SCOBY now?"
Is it time for the SCOBY NOW?
Almost!The next steps are almost identical, no matter what went before. I'll note any differences that different options may require.
- Get your one gallon or larger glass jar, and make certain it is sanitized. Place it in a stable location where you will do no damage with any splashed water or tea, and at a level that you will be able to pour liquid into it.
- If using the Shorter Cool Down Method, and if your 1 quart container of strong sweetened tea is still very warm (i.e., not at room temperature), put about 3 quarts of cool but not cold water into the jar. If using the "Wait for it" long cool down method, skip this step.
- Pour all of your sweetened tea into the gallon jar. If using the Shorter Cool Down Method, you will want to ensure that the tea and water are mixed so the resultant cooled tea is uniform in temperature and that it is approximately room temperature.
- NOW it's time for the SCOBY! With exceptionally clean hands, pick up the SCOBY and place it into the jar of tea. It may sink or it may float - it doesn't really matter, as long as it is in there.
- Carefully add a cup or more of starter kombucha, from which your SCOBY should have just come. If you don't have enough starter kombucha, you may use bottled room temperature kombucha either from a previous batch of your own or from a bottle of commercially sold, raw, organic, plain kombucha (like G.T.'s Original Raw Kombucha) to make up the difference. Some kombucha brewers advocate using apple cider vinegar if you do not have starter kombucha, but I've never done that, so I'm not sure how much of it you would add.
- Put your clean fabric cover over the mouth of the jar and fasten it on with a rubber band.
- Carefully place the covered jar in the warm place you have prepared for the fermentation process, and wait.
- Taste test your kombucha using a straw: if it has been consistently above 80 degrees where you are fermenting, test after 5 days; test at 7 days if it has been consistently less than 80 degrees, particularly if it has been between 75 and 80 degrees. Any cooler and you should probably test at 7 days just to see how far along it is, then use your own judgment on testing intervals after that. While people's tastes vary, for most people, tart but not vinegary is going to be about what they want. I like mine tart with a hint of sweetness to it, but I find that too sweet is not refreshing.
Once your kombucha tastes just the way you like it, it is time to bottle. Bottling and flavoring your kombucha will be another post! In that next post, I will try to include any other information and tips I can think of as well as links to some of the resources I have used or at least looked at.
I hope these steps haven't been too confusing. Feel free to ask questions if you have any. If I don't know the answers I will try to find them for you.
Till next time - enjoy!