No, it is not necessary, however, we do recommend that you do refrigerate your OMBucha® Kombucha. OMbucha® can be kept either refrigerated or at room temperature for up to 2 years (consume within 10 days of opening), although watch out for the build-up of naturally occurring carbonation if kept at room temperature!
The majority of kombucha sold on the market, like OMBucha® is raw, and therefore biologically active. The fermentation process continues as long as bacteria and yeast have sugars to feed on. Yeast is temperature sensitive, and cold temperatures keep them less active.
Trace amounts of ethanol are naturally produced by the fermentation process. Keeping kombucha cold is an important means to ensure the quality remains consistent and compliant.
If exposed to warm or hot temperatures, the fermentation continues rapidly and the carbon dioxide will build up quickly. The results could be anywhere from an excess carbonation upon opening to an exploding or broken bottle. It is important to keep commercial kombucha refrigerated at all times to prevent any mishaps. Good thing it is so delicious, leaving it in the bottle almost never happens!