Why do I have to cover my Kombucha Tea during fermentation?
This is done to prevent air-borne contaminants from getting into your fermenting container and contaminating the contents. Never use a solid lid, (the bacteria and yeast are aerobic–need oxygen to survive) use only a tightly woven cloth, disposable unbleached paper coffee filter, unbleached paper toweling or similar material held closely to the edges of the container with a rubber band. This way oxygen can enter the fermenting vessel and carbon dioxide–which is produced during the fermentation process– can escape back out into the atmosphere.
