Naturally occurring symbiotic microbial communities (SMK) are the most robust assemblages for a multipurpose use in keeping humans healthy and soil fertile. Especially, safe and reliable SMK are needed for producing probiotics and ferments valuable for health problems prophylaxis. This is true for long-term expeditions, outposts, extraterrestrial permanently-manned bases where humans are exposed to adverse environmental factors, weakening the immune system. The kombucha beverage has been used in human society within millennia as a probiotic drink which is produced by naturally occurring mixed populations of living microorganisms. Here, we discuss the potential of the kombucha culture for outposts in far future missions
