Months after we originally intended to, Gregory and I finally brewed our lambic-style ale on 09 February 2015. We used Jim Liddil’s tek which is a conversion of Brasserie Cantillon’s turbid mash schedule to the homebrew scale. Since we don’t currently have a barrel with neutral enough character, we opted to add French oak spirals to primary (we boiled the hell out of them beforehand so they wouldn’t overwhelm the beer).
We don’t have a koelschip and we didn’t let the beer spontaneously ferment per se, rather we chilled with a wort chiller as usual and pitched both of the batches of wild yeast that I harvested from my house (see my previous post). We also overlooked the fact that our homebrew store wouldn’t have raw wheat and, as we were pressed for time, we just settled on regular wheat malt. Though theoretically this could actually harm our efficiency because the wheat has already been well modified, the real goal here was to conduct the turbid mash, so we went ahead with it and did hit our intended gravity.
We have not yet decided if, when this beer is ready, we will serve it straight, fruit it, or blend it with a younger lambic-style ale to produce a gueuze-style ale; we’ll keep you posted.
Turbid Mash Lambic-Style Ale
Batch Size (Gal): 5.0
Total Grain (Lbs): 8.0
Anticipated OG: 1.048
Anticipated SRM: 3.0-7.0
Anticipated IBU: 0-10
Brewhouse Efficiency: 75%
Wort Boil Time: 240 Minutes
66% – 5.3 Lbs. Belgian 2-Row Pilsner
33% – 2.7 Lbs. Wheat Malt
3.50 oz. Yakima Valley Hops Aged Lambic Hops (Leaf, 13.0% AA) @ 240 min.
1.00 tsp Yeast Nutrient @ 15 min.
Wild yeasts harvested and propagated from home
Bottle dregs from Brouwerij Oud Beersel Oude Geuze
Jim Liddil’s A Liddil Lambic Lesson
02.09.15 — Cold crashed and decanted the growlers of wild yeast I propagated morning of brew day
Brewed on 02.09.15 with Gregory
02.09.15 — After a nearly eight hour brew day, chilled wort to 70F and pitched the wild yeast into a carboy with the oak spirals and put in on the brewbelt.
02.13.15 — Signs of fermentation activity
03.25.15 — Transferred off of the oak spirals into secondary fermentor and added the bottle dregs from Brouwerij Oud Beersel Oude Geuze
02.11.16 — Pulled a sample from the carboy and tasted it. Lots of oak character even though we boiled the spirals for quite a while and changed the water numerous times. Surprisingly not too much acidity/sourness yet, will probably pitch some extra bottle dregs soon.
04.05.18 — Tasted beer, and lots of diacetyl present (wasn’t there previously or when the beer was young). Guessing it’s due to pediococcus re-fermentation. Will pitch fresh Brett. Brux. and starter wort to clean it up as I have done in the past with surprise diacetyl in long-aged sours.
04.08.18 — Transferred off it’s long-time yeast/bacteria cake and pitched some Brett. Brux. slurry from the 2nd lambic-style beer Gregory and I brewed. Made a large, fresh Brett. Brux. starter and will pitch half of this into the beer in a few days.
04.11.18 — Pitched about 800ml of active Brett. Brux. starter into carboy.
Calculated OG: 1.048