I love kombucha.
Several years ago, I became interested in it, but rarely bought it, as it's in that category of pricey, cool products that are too expensive for this Dutch guy to buy. I mentioned, off-handedly, to my wife once that I wanted to try and make some myself, but never really did anything until Christmas of 2015. That year, we decided to challenge ourselves into trying to find heartfelt gifts for each other with a $10 price limit. I bought her some earthy cosmetics and loose-leaf tea, and she bought me the supplies to start making my own kombucha.
I was hooked. The process was easy enough, the product was delicious, and the cost was a fraction of the store-bought product. Since then, I've been making it constantly, and have produced (and drank the majority of) over 200 litres of it.
At this point, I feel it necessary to explain why I drink kombucha. In most kombucha-related circles I'm in, it seems that the primary reason is the purported health benefits. I'm not in it for that. I could not care less about fancy health stuff. Sure, it may have some benefits—I do have some things I’ve noticed that some might attribute to the drink—but the fact that I've seen at least 50 health reasons to drink it makes it feel a bit like “snake oil”.
Why I drink it:
It's cheap. Cheaper than juice, soft drinks, or sweetened tea, my three default beverages.
I like to have something to drink that's not water.
It's a fun thing to make. It's a neat little project, much like homebrewing, but a lot simpler than many alcoholic beverages.
By replacing most of my beverage drinking with kombucha, my refined sugar intakes have been reduced significantly, to the point that I've begun to notice the exceeding sweetness of soft drinks, and the effects of a “sugar high”.
Now, if you're sitting there thinking, “I want to get on this bandwagon!” here's your first step: gather the supplies. Most people recommended doing a one-gallon batch, and not going much smaller than that. (The smaller the batch, the more finicky the ratios of ingredients can be.)
What you'll need to get started:
A scoby and 2 cups of “starter fluid”. The scoby is a mass of “good” bacterias and yeast in cellulose, and is what makes the clock tick, so to speak. This is reused each batch, and grows over time. You'll get your scoby from someone who took their scoby, when it was large enough, and ripped a layer or two off. The starter fluid is kombucha that someone else has brewed, or if this isn't your first batch, 2 cups that you saved from the last one. The starter fluid/scoby combination is similar in concept to how sourdough bread is produced. Don't have a scoby? See below.
For the sake of simplicity, I'm calling the glob of yeast and bacteria a scoby and treating it like a normal English word. There's many terms for it, some going as far as to say the glob is actually a “pellicle”, and “scoby” means the glob and the fluid together. Technically, “scoby” is an acronym for symbiotic culture of bacteria and yeast (so it should be written as “SCOBY”), but the fact is that it's neither symbiotic or a culture. Since there's not really another good term for it, I'm going to say “scoby”, ditch the misleading and annoying acronym, use the standard “ies” pluralization, and stick with it.
A 4 litre/1 gallon brewing vessel. The simplest method is to buy a pickle jar at Costco, and force your family to eat a lot of pickles. This can be glass or ceramic, but stay away from any plastics or metals.
Tea. For the basic recipe, use black tea. You can also use green or white tea, but avoid flavoured teas, even Earl Grey, as they can have ingredients that will conflict with the fermentation process. If you don't like the “plain” end product or want more flavour variations, there's things we can do at a later step. For each batch, you'll need 7-10 tea bags, or 2-3 Tbsp of loose-leaf. Since caffeine is one of the things that the scoby consumes, non-caffeinated tea is not an option. I have seen reports of caffeine tests saying that the end product has less caffeine than decaffeinated coffee, but it does vary.
3 litres of water, preferably with no chemical additives, like flouride or chlorine. Some set their water out overnight, as they claim some of the fluoride evaporates, but I haven't researched this.
1 cup of sugar. This can be white sugar or a less-processed version. Honey is also an option, but I wouldn't start off with that. Also, as the sugar is the other thing that the scoby consumes, you can't use any fake sugars, even stevia.
You'll need something to bottle the finished product in. You'll want something sealable and air-tight, and designed to hold pressure. (This means no mason jars!) The bottles I use are called swing-tops, and you can find them at homebrew supply stores. (Also, don't just use any bottle if you don't know how much pressure it can hold. IKEA sells swing-tops, but the aren't tested for pressure, and you risk having one explode!) While you're learning, you can reuse 1 litre soft-drink bottles, which also helps you learn how long it takes to carbonate (as you can feel how much pressue has built up), but apparently the long-term use of plastics can leach chemicals out of them. They also don't look very pretty.
What if you don't have a scoby (and starter fluid)? There's many ways to get one:
Ask me for one, if you live nearby.
Like me, there's many people who make their own kombucha on a regular basis. My wife got mine from someone in a local “crunchy mom” Facebook group, and you can also take a look at Craigslist/Kijiji for people giving them away or selling them. If you're on Reddit, which you should be, check out r/findascoby and post there!
Buy one online. There's a few places in the USA that produce and sell them, but they can be a bit pricey after shipping costs.
Grow your own with some store-bought “raw” kombucha. This can be difficult, and I wouldn't suggest a first-timer start out this way. I might do a post about this in the future.
Have all your supplies ready? Let's head over to step two: basic brewing. The basic process of making kombucha is very simple! Once you've got your supplies laid out, let's start.
The Brew Cycle
- Boil half of your three litres of water. Once boiling, add the tea and steep for about 5 minutes.
- Remove the tea and dissolve the sugar.
- Add the remainder of the water. Before continuing to step four, you'll want to make sure your sweet tea is at room temperature, as high temperatures can kill the fermentation cultures.
- Combine the sweet tea and starter fluid in your jar, then place the scoby on top. Don't worry if it sinks!
- Cover with a cotton cloth (not cheesecloth as it's too loose) and let it sit for 7-10 days, at room temperature and out of the sunlight. In general, it'll go faster the warmer your home is, so if your house is cool, find a warmer spot. In winter months, I've brewed mine on top of my fridge, where it benefits from being higher, and also from the warmth generated by the fridge.
- After about six days, stick a straw down past the scoby, place your finger on top, and pull up a sample of the fluid. Do this each day until it has a combination of tartness and sweetness that you like, then move on to step 7.
- Bottling day! Set aside two cups of the kombucha (the "starter fluid") and your scoby for the next batch, then divide among your bottles. This is when you'd add flavouring items, detailed below. If you're not adding any flavouring elements, and you want strong carbonation, you could add a quarter teaspoon of sugar to fuel extra carbon dioxide production. You'll also start your next batch at this point, though you can wait a few days, leaving the scoby in the starter fluid, as well.
- Seal your bottles and keep them at room temperature for about 48-60 hours. This is called the second fermentation. If you're using plastic, you'll be able to feel them get hard as the carbon dioxide, on of the products of fermentation, builds up.
- After 48 hours, it's ready to drink, or place in the fridge to slow the pressure build-up.
Second Fermentation Flavouring
When you bottle your kombucha for the second stage of fermentation, you can add a myriad of fruits, vegetables, and herb combinations to add to the flavour of the drink. The basic idea is, when you bottle, add some fresh or frozen fruit, fruit puree, pure fruit juice, or any combination, and see what happens. A basic rule of thumb is to use about 1/8 to 1/4 of a cup per 1-litre bottle.
Be careful when you open them for the first time! Just like adding sugar during the second fermentation, the sugars in your flavouring additives can cause some crazy over-carbonation if you're not careful.
Here's some of my favourite things I've used as flavouring:
- Goji berries, both fresh and frozen
- Ginger root
- Apples and cinnamon
Experiment! There's not much that can go wrong, other than you making a mess in the kitchen or making a strange flavour, like garlic and lemon. Have fun!