I was able to find all the ingredients, except for Vanguard hops. I substituted Czech Saaz for those, as they're similar. I also substituted regular raisins for the golden raisins the recipe called for.
12 pounds Belgian Pale Malt
8 ounces Crystal/Caramel 60L Malt
4 ounces Chocolate Malt
8 ounces Clear Candi Syrup
6 ounces Raisins
0.65 ounces Magnum hops pellets @ 13.2% AA (60 min.)
0.55 ounces Czech Saaz hops pellets @ 3.0% AA (20 min. Whirlpool)
1 package Wyeast Belgian Ardennes
1/2 tsp. Yeast Nutrient
1/2 Whirlfloc tablet
1 tsp. Gypsum
BeerSmith estimates the following characteristics for this recipe:
- Batch Size: 5.3 gallons
- BH Efficiency: 80%
- Boil time: 60 minutes
- Estimated OG: 1.074 SG (or 18.0 Brix)
- IBUs: 26.1
- Color: 14.4 SRM
- Est. ABV: 8.2%
- Bitterness Ratio: 0.341 (IBU/SG)
- Estimated Pre-boil Gravity: 1.067 SG
- Estimated Final Gravity: 1.015 SG
Grainfather calculations required 5.25 gallons of mash water treated with a Campden tablet.
A 60 minute mash at 153F, followed by 10-minute mash out at 168F.
Sparged with 2.5 gallons of water at 168F.
I expected to have 6.25 gallons of wort pre-boil with a gravity of 16.4 Brix or 1.067 SG. I hit the volume target exactly, but my pre-boil gravity across multiple measurements was 14.1 Brix or 1.057 SG. That's about 85% of what I thought I'd get.
pH throughout this mash stayed in the 5.2 to 5.3 range, representing ideal mash conditions.
The wort was brought to a boil in The Grainfather and a 60-minute timer started:
- 60 minutes: Add Magnum hops
- 30 minutes: Withdraw about 2 cups of wort from the kettle and pour over raisins. Puree the raisins in the wort.
- 15 minutes: Add yeast nutrient
- 10 minutes: Add whirlfloc and pureed raisins
- 3 minutes: Recirculate wort through chiller to sterilize it
- 0 minutes: Turn off heat, run cold water through chiller to cool it back to room temp
- Add Saaz hops, then whirlpool/steep for 20 minutes
- Pump wort through chiller and into sanitized fermenter
At these figures, the beer will wind up considerably more bitter than it should be and quite a bit lower in alcohol content.
The goal is to ferment at ambient/natural temperature for the first 3-4 days, then add a heat wrap to keep it in the 74-75F range for another week until fermentation finishes. Yeast was pitched on 12/12/2017.
Post-Mortem and Other Notes
The only significant changes I can think of during this time are that I've begun using a new motorized grain mill. While I could blame the mill, one batch I made when using it delivered a 54% efficiency, while another delivered 83%.
12/13/2017: I've seen no activity from the airlock as yet, which could indicate that the package of yeast did not contain enough viable cells to ferment the beer. I'll check again tomorrow and if necessary pitch something else. I have a package of Omega Belgian Ale W yeast that I could use.
12/14/2017: The beer shows no signs of fermentation and no krausen. I pitched the Omega yeast.
12/15/2017: Still seeing no signs of life in the airlock, I opened the lid of the fermenter to find a nice high krausen, so I immediately closed it. Still, with the lower temperatures we're seeing this week in Ohio, I decided to put a heat wrap around the fermenter and set a temperature controller to keep the beer at 70F or higher for the remainder of primary fermentation.
12/17/2017: Today, after not having seen any visible airlock activity since pitching the yeast, I decided to grab a sample of wort and do a gravity test. The beer coming out of the airlock was lighter in color than I expected. The refractometer registered 8.2 Brix. Based on my original hydrometer reading and calibration, BeerSmith estimates the corrected gravity to be 1.004 SG and the ABV to have reached 10.12%. That is much, much more dry and high in alcohol than I expected, but tasting the sample anecdotally confirmed it. The flavor is dry and slightly astringent, without any hint of sugar to it. This beer may actually be ready for bottling given how low the gravity has become.
12/24/2017: The beer has mellowed a bit and seems ready for bottling. That is something I'll hopefully accomplish this week.
12/27/2017: The beer was bottled today with enough corn sugar to carbonate it to 2.8 volumes of CO2, which should be about right for an American/Belgian hybrid ale. The hydrometer measured the gravity as 1.013 SG. The refractometer's uncalibrated reading was 8.2 Brix, which BeerSmith says with calibration should be 1.012 SG. Given the starting gravity of 1.066 SG and final gravity reading of 1.013 SG, it should be approximately 7.05% ABV.