kombucha Answered

Kombucha CAN be made from store bought kombucha (certain kinds). Basically, you use the residue at the bottom of the bottle/container to create your own kombucha culture, which reproduces as you create kombucha.

Here's the instructable on how to create your own mother/scoby/mushroom/thing.

https://www.instructables.com/id/Making-your-own-Kombucha-mother/

If you are in a populous city, you might want to look over craigslist, sometimes people are willing to share.

just put kombucha in the search box above to find the kombucha instructables. I believe you need the active kombucha "mother" to start and not a processed final product. Good luck.