Black Imp Brew Session

Brew Session Info

1/31/2014
(Include any important notes from brew day until tasting)

Mash started at 154.5F, came out at 151.5F. I ended up collecting a little extra wort...I was supposed to get 7.2 gallons and I collected about 7.5 to 7.7. My post-boil collected wort was about 5.6, .6 more than I was planning. This resulted in a lower OG and will decrease the alcohol content from 11% to 9.8% unless I can attenuate higher than I was estimating. I wasn't sure of my efficiency, so I waited to add the DME until the sample I collected cooled enough to get a correct gravity reading. I ended up adding the DME at ~50 Minutes left in the boil, and it caused some major foaming and frothing for a good 10 minutes...not ideal. Started Soaking the oak cubes in Bourbon on 2/24. Tasted on 3/3 - Some coffee flavors but no oak and no chocolate. I added an additional 2 ounces of cocoa nibs, but I boiled them in water this time first to try and unlock the flavors a bit.

Mash

PH
154.5 °FC
151.5 °FC
minutes

Boil

1.056 1.079 (estimated)
7.7 gallons liters 7.20 (gallonsliters estimated)
90 minutes minutes (90 minutes estimated)
5 gals liters

Gravity Estimates

Based on boiling 7.70 gallonsliters at 1.056 for 90 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.067.

You wanted an OG of 1.100. It looks like it will be under.

Fermentation

5.6 gallons liters 5.65 (gallonsliters estimated)
1.100 (1.100 predicted)
(1.034 predicted)

Conditioning

Tasting Notes (0)

There aren't any tasting notes logged yet

Comments

  • Adam-Leith

    Nice scenario of black bitchness, let us know how this mean one turned out....?

    11 years ago
  • ctorx

    Will do. The Flu took a visit in our house so I wasn't able to brew this when I wanted to, but I hope to soon.

    11 years ago
  • ctorx

    I brewed this today, so much fun. I collected from my kettle directly onto the yeast cake from a brown ale I just transferred. After only an hour, I have consistent bubbling in my blow-off vessel. Fermentation has already started...I hope this thing doesn't blow up while I'm sleeping tonight.

    11 years ago

Recipe Facts

Black Imp
Imperial Stout
  • 5.65 Gallons Liters Batch Size
  • 7.50 Gallons Liters Boil Size
  • 90  min Boil Time
  • 1.100 OG
  • 1.034 FG
  • 73.2 IBU (brewgr) Bitterness
  • 0.73 BG:GU
  • 57.6° SRM Color
  • 71% Efficiency
  • 8.5% ABV Alcohol
  • 357 per 12oz Calories
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