Kombucha

[Zambi]

I think you can just grow it from a bottle of non pasteurized plain kombucha with tea and sugar (like you'd make yogurth from one of the shop). So you don't rely on someone to give you a SCOBY but you just grow your own

Thank you.
Problem is that they don't sell kombucha here.
At least I have never seen it, but am going to look in the specialty shops

 

[Over The Cliff Brewing]

My wife makes kombucha on a regular basis. She uses different teas and different types of fruit and sugars. I have to admit, that SCOBY thing really looks like it will jump out of the fermenter and attack you.