Kombucha

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Kombucha is a microbial polyculture composed from variety of bacteria and yeast. Traditionally it proliferate by consumption of sugar (for example sucrose/saccharose) and black tea dissolved in liquid water medium. This symbiotic complex and especially G. xylinum is producing microcellulose biofilm which is floating on the top of the brew. Some brewers are suggesting that it is serving as a protection against oxygen from the air and it's floating capacity is due to the absorption of carbon dioxide produced by the microbes in the beverage.

The health benefits of kombucha beverages are widely discussed. From personal experience of many consumers they experience direct positive effect on digestion especially after eating heavy fatty meals. If the brew is stronger, therefore it's pH is lower people with sensitive tooth should be careful and drink some other beverages to wash their mouths or they tooth may become too sensitive and cause uncomfortable sensations for few hours.