Jester King (Austin, TX) has created a new collaboration beer with a local Kombucha tea maker to create Buddha’s Brew. Kombucha is basically sweetened tea, fermented with Kombucha culture. The culture contains much of the same yeasts (brettanomyces, saccromyces) that beer uses.
This is the first time that Jester King fermented a beer entirely in oak. They took sweet wort (just after the boil) and put it into oak barrels, and inoculated it with souring bacteria. After 9 months of aging, JK blended it with live Kombucha culture from Buddha’s Brew Kombucha. The beer is naturally carbonated, thanks to bottle refermentation. (The yeast in the bottle creates CO2.)