The best thing to do during your absence is to put the kombucha in the refrigerator, in about 250 ml of its own liquid, provided you
to leave a little air in the container so it can breathe. It then falls into "hibernation" and can be kept like that for about three months.
Otherwise, if you leave it in the open air, at a temperature of about 18 ° C (so not a very high one), the fermentation process continues, provided that the kombucha has enough sugar and oxygen.
For this reason, the best way to keep it during your absence is to put it in the refrigerator.