All-Grain - Sour Mash Dry Stout

**jds** · 09-23-2008, 10:57 PM

Recipe Type: All Grain
Yeast: Safale US-05
Yeast Starter: None
Additional Yeast or Yeast Starter: Partial Wild / Lacto Ferment
Batch Size (Gallons): 5.5
Original Gravity: 1.039
Final Gravity: 1.009
IBU: 33
Boiling Time (Minutes): 60
Color: 24
Primary Fermentation (# of Days & Temp): 30 Days ~ 65F
Tasting Notes: Mildly Roasty, Aggressively hopped for a stout, with some sourness and funk. A Quaff

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Recipe: Sour Mash Dry Stout
Brewer: Joe S
Asst Brewer:
Style: Dry Stout (Irish)
TYPE: All Grain
Taste: (35.0)

Recipe Specifications

Batch Size: 5.50 gal
Boil Size: 7.00 gal
Estimated OG: 1.039 SG
Estimated Color: 24.4 SRM
Estimated IBU: 35.3 IBU
Brewhouse Efficiency: 75.00 %
Boil Time: 60 Minutes

Ingredients:

Code:

Amount        Item                                      Type         % or IBU      
4.0 oz        Rice Hulls (0.0 SRM)                      Adjunct      2.86 %        
3 lbs 8.0 oz  Pale Malt, Maris Otter (3.0 SRM)          Grain        40.00 %       
2 lbs         Rye Malt (4.7 SRM)                        Grain        22.86 %       
1 lbs 8.0 oz  Barley, Flaked (1.7 SRM)                  Grain        17.14 %       
1 lbs         Roasted Barley (300.0 SRM)                Grain        11.43 %       
8.0 oz        Pale Malt, Maris Otter (3.0 SRM)          Grain        5.71 %        
0.50 oz       Sterling [7.80 %]  (60 min)               Hops         14.3 IBU      
1.00 oz       Goldings, East Kent [6.20 %]  (30 min)    Hops         12.9 IBU      
1.00 oz       Williamette [5.40 %]  (10 min)            Hops         4.0 IBU       
1.00 oz       Goldings, East Kent [6.20 %]  (5 min)     Hops         4.2 IBU       
1.00 tbsp     PH 5.2 Stabilizer (Mash 60.0 min)         Misc                       
1 Pkgs        Safale US-05 (Fermentis #US-05)           Yeast-Ale

Mash Schedule: Single Infusion, Medium Body, Batch Sparge
Total Grain Weight: 8.25 lb

Code:

Single Infusion, Medium Body, Batch Sparge
Step Time     Name               Description                         Step Temp     
60 min        Mash In            Add 10.00 qt of water at 166.6 F    154.0 F       
5 min         Mash Out           Add 6.00 qt of water at 194.8 F     168.0 F

Notes:

The idea for this beer was to take the typical Dry Stout, but make it something other than a Guinness clone. The rye adds some spiciness and mild bready notes. More aggresively hopped than most dry stouts, but not overpowering.

The "Sour Mash" part of this recipe comes from mashing in 1/2 lb of the Maris Otter with about 3 cups of water at conversion temperatures, then letting the small mash sour over about three days. Once it was starting to bubble and smell sour, I drained it, sparged with another pint of water through a mesh strainer, and boiled for ten minutes before cooling and adding the soured wort to the primary fermenter. The sour portion of the mash smelled a lot like old sneakers while boiling, but fermented out to a nice extra "twang" of sour and a mild funky undertone not unlike a very mild Belgian.

At a fairly low ABV, this one is a quaffer for sure, with a huge, persistent head.

**jds** · 09-30-2008, 03:07 PM

BigKahuna had an opportunity to drink this beer. Here's what he had to say:

jds Sour Stout.

**flyangler18** · 09-30-2008, 03:14 PM

Sounds like a wonderful recipe! Did the lacto take it slightly beyond the sour mash used in making Guinness?

BigKahuna · 09-30-2008, 03:19 PM

You'll NEVER mistake this for a Guinness! Where Guinness has a bitter flavor on the back of the palate, This has a sour flavor at the back of the tongue. This is a great beer, and Anyone that even raises an eyebrow to this recipe should get to planning their batch.

I hate to rave about a beer like this, but it's fuggen GoUd!

**Melana** · 09-30-2008, 03:21 PM

Thansk for posting, i just might have to try this!

**jds** · 09-30-2008, 03:22 PM

Quote:

Originally Posted by flyangler18

Sounds like a wonderful recipe! Did the lacto take it slightly beyond the sour mash used in making Guinness?

Guinness adds back (IIRC) about 3% by volume of soured beer. Souring 8 oz of two-row in this recipe is just under 6% of the grist. It's always hard to say with wild fermentation, since there's no guarantee it's just a lacto ferment, but it's a fairly subtle souring, IMO.

Kahuna: Sounds like maybe it's a good thing I gave you three deuces

. Hopefully, there will be some left by GABF-time.

**flyangler18** · 09-30-2008, 03:23 PM

Guinness employs a sour mash as well- just trying to place this one in some kind of context. Sounds like the sour note is a bit stronger in presence.

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