Lambic/Gueuze is one of the most complex, intricate, and confusing styles to brew. Virtually every stage of the process from the mash, through carbonation can be different that the "standard" brewing procedure. Things like turbid mashing, aged hops, spontaneous fermentation, barrel aging, and blending are all parts of the traditional process. Homebrewers have employed all of these (as well many substitute procedures), but which of these are the key components required to replicate the acidic, fruity, funky beer?
While I've had great success brewing sour beers in general, producing a great homebrewed Lambic has so far eluded me. The
first batch I brewd was nearly undrinkable (poor fermentation), while
this second batch is drinkable it doesn't have the right balance. I have high hopes for
my third attempt, at a year old it has a great deal of complexity and a moderate acidity that I hope will continue to increase over the next 6-12 month.
2.0 was brewed with 70% pils, 30% raw wheat, using the Wyeast Lambic Mash (from
Wild Brews). It received a four hour boil with 3 oz of ultra-low AA% Hallertau Select hops. I did a standard chill then pitched Wyeast Lambic Blend, Vinnie's Russian River bug chips, and the dregs from Drie Fonteinen Oude Gueuze (the best Gueuze available in my opinion). The only major issue with the process was that the complex mash, hot sparge, and long boil conspired to give the beer an OG of 1.070 (well above the standard range for commercial examples 1.040-1.060, although Boon makes a great 8% ABV Gueuze called Mariage Parfait).
On a side note, I refuse to call the beers I brew pLambics (psuedo Lambics) for the same reason I don't say pKolsch or pEnglish Pale Ale. I think the fact that I am an American homebrewer is enough to imply that these beers are made in the spirit of the Belgian brewers who have the right to use the term Lambic commercially.
Lambic 2.0
Appearance – Moderately hazy yellow-gold. Pours with a huge head that quickly sinks to a scant ring of tiny bubbles despite the high carbonation.
Smell – Great big funky bretty nose, floral/honey, lemon rind, lots of subtle complexities. It is a bit rough/rustic compared to my favorite Lambics, but it isn't far off. As it warms up a bit of that clean ethanol comes out, but the funk does a good job of hiding it.
Taste – Sadly the taste doesn't have the acidity to back up that big aroma. It comes off more like a De Proef beer (one of the Flemish Primitive or Reinhart Wild Ale), faintly tart but the overall balance is closer to a Belgian strong golden (crisp, dry, moderate mineral bitterness). The funk gives it most of its character, making for a beer that lacks depth. The finish has a mild mineral character that I don't really care for, but it isn't objectionable.
Mouthfeel – The mouthfeel is much bigger than a standard Lambic, which isn't so surprising when you consider it has an OG .020 higher than most commercial offerings. Great carbonation, and certainly dry/crisp for such a big beer, but without the acidity it just isn't the same.
Drinkability & Notes – Compared to the first Lambic I brewed this is a great beer, but I should have watered it down before fermentation. The high gravity sent this off on a tangent (probably too strong for the lactic acid bacteria), but I'm happy to be getting closer to my target. A bit of 88% lactic acid added to the glass improved things, but it didn't fix it completely.