Remember when I was brewing water kefir and accidentally almost made my Handsome Assistant lose an eye? As much as I loved the process (and the product), I also found that water kefir required a lot more attention than I am accustomed to from my colonies of semi-feral microorganisms. So, I’d been considering going back to making kombucha.
And remember those PSAs about video piracy from back in the day?
Joke’s on them. I would 100% download a car.
(Also, hello again! I apologize for my unannounced hiatus last week. It was my Handsome Assistant’s birthday, the world is on fire, and I was not feeling my best. I am better now and 100% back on my bullshit again.)
Anyhow, I was originally introduced to kombucha by a very sweet lady from Russia that I used to work with back when I still did Laboratory Stuff. (Predominantly a series of small, purposeful, semi-controlled explosions.) She brought me part of her SCOBY, and I used that for ages. Eventually, I fell out of the practice when my then-partner and I moved.
The trouble is, getting back into making kombucha hasn’t been super easy. Tracking down a live SCOBY isn’t always the simplest process and having them shipped through the mail can be tricky. (Of course, this is true of anything living that has to go through the mail. Bugs. Plants. Small children.)
Fortunately, there is a solution: Just kind of make your own, with a little help from the bottled stuff.
The majority of bottled kombucha on the market is raw. It has to be, in order to do the whole “probiotic” thing. This means that, even without a SCOBY, it contains what you need in order to brew more kombucha.
I’ve read posts that claim that bottled kombucha has been somehow “weakened,” and isn’t as strong as the starter culture used to produce commercial kombucha. I have my doubts about this because this would mean that it also wouldn’t be very effective as a probiotic. I’m also not sure of what kind of process would selectively weaken a probiotic culture in order to… install some kind of microbial DRM, I guess?
Even if this were the case, it doesn’t actually matter. As anyone who’s started a sourdough culture or accidentally left a bottle of juice out for a few days can tell you, the bacteria and yeasts responsible for fermentation are all around us. The trick is to select for those, and not pathogenic bacteria or toxic fungi. If you start with bottled raw kombucha, you’re already starting with something that has the low pH and natural compounds needed to keep down populations of unwanted microorganisms. It might take a couple of rounds for a SCOBY to get to full strength, but it’ll get there. I mean, the first kombucha ever made didn’t have a SCOBY to start with. Even if all you have is a bottle of kombucha, you’re ahead of the game.
The process is easy:

- Get a bottle of kombucha. Make sure it’s raw. Flavor doesn’t really matter. Drink about half to two thirds of it. Leave the goopy stuff at the bottom.
- Clean a nice, wide mouth jar. Rinse it thoroughly.
- Brew up some nice, strong tea in your jar. I prefer green. (While you technically can make kombucha from herbal tea, this isn’t really recommended. If you do want to do so, you’re advised to cycle between a batch of herbal kombucha and a batch of the regular kind. To start with, you’re better off working with actual tea — the stuff made from Camellia sinensis, without any other additives.)
- Add a bunch of sugar. It should be very sweet, albeit not syrupy. Don’t worry about the sweetness, because the kombucha will eat most of the sugar anyway.
- Allow the tea to cool to room temperature, or just slightly above. Too much heat will kill off the culture.
- Swirl the bottled kombucha thoroughly to incorporate the goopy stuff into the liquid. Pour the bottled kombucha into your tea and sugar mixture.
- Cover the jar with a bit of cloth, a sturdy paper towel, or a coffee filter. Secure it with a rubber band.
- Put it someplace clean, warm, and dry, out of direct sunlight.
- Ignore it for a while. You’ll eventually begin to see a thin, translucent “skin” forming on the top. This is a baby SCOBY! With time, it’ll get thicker.
After a week or so, your SCOBY should be a bit more substantial. Brew up more tea and sugar and transfer it to a new jar to allow it to continue to grow. The old SCOBY will break down, and a new one will form on the top. If conditions are right, it’ll gain some strength with each successive iteration. It’s a good idea to cut the SCOBY into halves so you can have two separate batches running at once — that way, if one goes weird, you’ll still have a backup.
So far, this process has been working out well for me. The SCOBY is SCOBYing, and I’m coming up with ideas for flavoring a second ferment. I’m thinking a ginger peach or raspberry and rose.



