Perpetuum Sour - Beer Recipe - Brewer's Friend

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Perpetuum Sour

Created: Monday February 16th 2015
188 calories 11 g 330 ml
Beer Stats
Method: All Grain
Style: Straight (Unblended) Lambic
Boil Time: 60 min
Batch Size: 25 liters (fermentor volume)
Pre Boil Size: 34 liters
Pre Boil Gravity: 1.046 (recipe based estimate)
Efficiency: 70% (brew house)
Calories: 188 calories (Per 330ml)
Carbs: 11 g (Per 330ml)
1.063
1.003
7.8%
7.7
10.1
n/a
n/a
 
Fermentables
Amount Fermentable Cost PPG EBC Bill %
3 kg German - Pilsner3 kg Pilsner 38 2.77 41.7%
2.70 kg United Kingdom - Maris Otter Pale2.7 kg Maris Otter Pale 38 8.51 37.5%
500 g Rolled Oats500 g Rolled Oats 33 4.37 6.9%
500 g Flaked Wheat500 g Flaked Wheat 34 3.84 6.9%
500 g United Kingdom - Wheat500 g Wheat 37 3.84 6.9%
7,200 g / £ 0.00
 
Hops
Amount Variety Cost Type AA Use Time IBU Bill %
30 g East Kent Goldings30 g East Kent Goldings Hops Leaf/Whole 4.41 Boil 20 min 7.65 100%
30 g / £ 0.00
 
Other Ingredients
Amount Name Cost Type Use Time
15 g CALSUL Water Agt Mash 90 min.
10 g CALCHLF Water Agt Mash 90 min.
1.20 g PFT Fining Boil 15 min.
 
Yeast
The Yeast Bay - Mélange - Sour Blend
Amount:
1 Each
Cost:
Attenuation (custom):
96%
Flocculation:
Med/Low
Optimum Temp:
20 - 26 °C
Starter:
No
Fermentation Temp:
20 °C
Pitch Rate:
1.0 (M cells / ml / ° P) 386 B cells required
£ 0.00 Yeast Pitch Rate and Starter Calculator
 
Target Water Profile
Bitters and Pale Ales
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
180 6 10 130 240 79
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
17 L Infusion -- 68 °C 60 min
14 L Sparge -- 75 °C 15 min
13 L Sparge -- 75 °C 15 min
Starting Mash Thickness: 2.4 L/kg
Quick Water Requirements
Water Liters
Strike water volume at mash thickness of 2.4 L/kg 17.3
Mash volume with grains 22
Grain absorption losses -7.2
Remaining sparge water volume (equipment estimates 21.7 L) 24.8
Mash Lauter Tun losses -0.9
Pre boil volume (equipment estimates 30.9 L) 34
Boil off losses -5.7
Hops absorption losses (first wort, boil, aroma) -0.2
Post boil Volume 25
Going into fermentor 25
Total: 42.1  
Equipment Profile Used: System Default

Batch Performance
Efficiency:
Conversion: 95.3%
Pre-Boil: 73% 27.4 ppg
Ending Kettle: 71% 26.6 ppg
Brew House: 66% 24.7 ppg
Wort Volume:
26 Liters
  • Expected 25 Liters of fermentable wort.
  • Adjust your equipment profile and calibrate your equipment to dial this in.
  • Expected OG: 1.063
  • Actual OG: 1.057
Alcohol and Attenuation:
Progress - N/A
  • Attenuation so far: 90.2%
  • Current ABV: 6.75%
Amount Packaged:
Pending - N/A
Requires Packaged log entry with a volume reading.
Latest Brew Log
Date Days Event Gravity Volume pH Temp Updated Comment
4/16/2015 7:58 PM
over 9 years ago
+0 Mash Complete 1.047 42 Liters 2/20/2021 3:43 AM
over 4 years ago
4/16/2015 7:58 PM
over 9 years ago
+0 Pre-Boil Gravity 1.047 35 Liters 2/20/2021 3:43 AM
over 4 years ago
4/16/2015 8:36 PM
over 9 years ago
+0 Boil Complete 1.057 28 Liters 2/20/2021 3:43 AM
over 4 years ago
4/16/2015 8:36 PM
over 9 years ago
+0 Brew Day Complete 1.057 26 Liters 2/20/2021 3:43 AM
over 4 years ago
4/21/2015 3:55 PM
over 9 years ago
+5 Other   2/20/2021 3:43 AM
over 4 years ago
Well I think there may well be a leak in the FV somewhere, nothing major but the airlock is doing nothing however there is a big fluffy white head on the beer and it stinks! I think the bacteria have got to work if nothing else!
4/28/2015 7:58 PM
over 9 years ago
+12 Sample 1.020   2/20/2021 3:43 AM
over 4 years ago
Well, not sure with this but then again we are in the world of the unknown!
The FV stinks of lactic bacteria infection, the same as when I have thrown beer away before....HOWEVER
This has now gone into the oak barrel along with 5 lts left over I have put into a plastic FV with airlock.
Upon tasting theres the obvious vegetable lactic taste but to be fair theres a hint of something great to come. Some residual sweetness from the still high gravity of 1.020.....watch this space....
6/2/2015 12:39 PM
over 9 years ago
+47 Sample 1.006   2/20/2021 3:43 AM
over 4 years ago
This tastes great so far, and only 1 month in. Some gravity to go yet but plenty left for the bugs to chew on. I shall be entering the first pull of this into the National Competition as well as Sourfest in Ireland.

Alcolyzer Results:
ABV - 6.76%
OG - 1057.18°
FG - 1005.62°
6/15/2015 3:51 PM
over 9 years ago
+60 Other   2/20/2021 3:43 AM
over 4 years ago
The 5lts sat in the Kitchen have formed a lovely bubbly pellicle, I would like to assume this is whats happening in the cask too!
9/18/2015 12:26 PM
over 9 years ago
+155 Tasting Note   2/20/2021 3:43 AM
over 4 years ago
Still not quite there but tasting great, lots of vanilla from the oak and not too much sourness. Like a good wine!
1/7/2016 4:49 PM
over 9 years ago
+266 Other   2/20/2021 3:43 AM
over 4 years ago
I think for the first pull I am thinking of just bottling the 10lts. I think I may add in a blend of my 100th beer; Dark Winter Saison and my wine barrel Flanders red......
1/12/2016 12:55 PM
over 9 years ago
+271 Other   2/20/2021 3:43 AM
over 4 years ago
Current plan:
Pull 10lts into a bucket that contains wine yeast and sugar, then bottle this plain version.
Flush barrel and the bucket with CO2.
Then using the same bucket, after a rinse, pull 10lts of the 100th beer (Dark Winter Saison I) and refill the barrel.
Leave this blend for another year adding dregs when and if necessary.
8/23/2016 11:02 AM
over 8 years ago
+495 Other   2/20/2021 3:43 AM
over 4 years ago
Unfortunately this had to go down the drain. The plan was to blend this into the 100th beer and the Wine Barrel Flanders Red but there was just too much ethyl acetate production (nail varnish remover) so I had to get rid.
A valuable lesson in not leaving a sour beer in an oak barrel for too long. I should have given this 6 months not 1 year.
Onwards and Upwards!!
 
Notes

This is the start of my own home Solera project.
I have acquired a Theakstons Old Peculiar Oak Pin

I shall ferment the beer using the Melange culture and leave in the barrel for at least 6 months before removing approximately 10 lts for packing. At this point the barrel will be topped up to prevent any O2 getting in.

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  • Last Updated: 2015-04-23 12:14 UTC