Commercial Kombucha Beers (Lambrucha and Fleur)
Kombucha has been in the news recently because it has been pulled from the shelves due to an alcoholic content in excess of the .5% ABV cap on "non-alcoholic" beverages. If you haven't heard of it, kombucha is a sweetened tea that is fermented with a mix of yeast (including Brettanomyces) and acid acetic producing bacteria. I thought it might be interesting to try a couple of commercial beers that are blended with kombucha for sourness and complexity.
Some long time readers of the blog might remember my experiments with kombucha (including a Flanders Red Kombucha) about three years back. I couldn't keep up with the cycle of production that keeping a kombucha culture demands (partially because my results weren't that great) so I eventually passed my scoby ("mushroom") off to my friend Nathan (who promptly threw it out).
The first beer is Lambrucha, a 3.5% ABV blend of year plus old lambic and kombucha from Vanberg & DeWulf (importers of such tasty beers as Saison Dupont, and Witkap Pater). The result is more like carbonated lemonade than anything else. Bright, citrusy, fresh, with vibrant carbon dioxide rising through the off-pink body, but not much head. The low alcohol and citrusy tartness make it a wonderfully quenching/refreshing beer, but with 1 year old lambic as the main ingredient I would have hoped for more complexity and Brett character. I would have been interesting to taste the lambic before and after blending to taste exactly what the kombucha contributed (I suspect that brightness that is rare in straight lambics).
Goose Island's Fleur looks and smells much more like a beer than Lambrucha (it is twice the alcohol so that isn't too surprising). It pours a hazy light amberish-red with a small white head. The aroma is very fruit, with strawberry and banana (and a light "artificial" bubblegum smell, maybe the hibiscus?). The flavor is similar, but it adds a bit of spice and a faint tartness (even some malt...). Fleur doesn't make the kombucha suggestion as strongly, relying on the fermented tea for complexity rather than as a main selling point (the bottle makes no mention of kombucha). While it is a more complex beerier beer, it lacks the brightness and drinkability of the Lambrucha.
Two interesting beers that use kombucha in different ways. I think as time goes on we will see more and more breweries blending kombucha into beers as a cheap/quick way to add some balancing acidity. Blendiung non-beer beverages into beer seems to be getting more popular in general. Lost Abbey for example has been doing blending beers with mead and wine as components. These are ll options for blending at home, and are all things that you can either make at home, or just buy for convenience and variety (as many people do for simple "bourbon barrel" beers).