My kombucha culture has turned black. What should I do?
A. A black scoby is a sign of a kombucha culture which has been contaminated or is worn out (takes a long time and many batches to do this). If your kombucha culture turns black, it should be retired to the compost bin. Turning black is not to be confused with developing brown or slightly discolored patches. Yeast build-up will result in brown spots or stringy particles attaching to the scoby and is a normal byproduct of the fermentation process.
