Do I have to ferment Kombucha Tea in the dark?
No. It doesn’t appear to make any difference. Kombucha can be fermented in full daylight, total darkness, or anywhere in-between. Some people living in far Northern climates such as Alaska, have reported very good results when fermenting their Kombucha Tea in full morning and afternoon sunshine during the winter months. Avoid placing your fermenting containers in a spot that receives full afternoon sunlight during the late spring, summer, and early fall months because the contents of the jar will heat up very quickly, and destroy the microörganisms which are needed from proper fermentation.