Winter Porter

My last several batches have been more on the hop forward side, and I longed for a dark beer to pair with the colder weather. Following the old BJCP style guidelines, I believe this would fit pretty well into the mold of a brown porter; with the 2015 revision, for style considerations it now sits as an "English porter."

The beer came together without incident, but the yeast behaved differently than I expected. My experience with West Yorkshire Ale is that the kraeusen hangs around long after active fermentation ceases. This time around, I saw almost no visible activity other than a bit of trub ring. Though this batch had plenty of time to sit at room temp at the end of fermentation, this batch showed lots of diacetyl shortly after bottling. Fortunately, a lot of that has seemed to dissipate over time. The resulting beer is pleasant, though it has an edge that I attribute to too much roast malt. I kept pushing up the roasted grains in BeerSmith to get it dark enough; the end result is plenty brown-black, but could probably do with a reduction in these malts to keep it from getting to acrid. The remaining diacetyl works with the acrid roast character in a not unpleasant way, resulting in a bit of dark fruit character rounding out the flavor. Not bad; would rebrew with tweaks.

Winter Porter

Batch size: 5.5 gallons
Projected OG: 1.045
Projected SRM: 29.1
Projected IBU: 27.9
Boil time: 70 minutes
Brewhouse efficiency: 66%   

Grains/Fermentables
67.5% - 7 lb Rahr 2-row
14.5% - 1.5 lb Brown malt
9.6% - 1 lb UK dark crystal (75-80L)
4.8% - 8 oz UK Pale Chocolate
3.6% - 6 oz UK Chocolate

Hops

.3 oz Millennium (15.9%) (60 min)
1.3 oz EKG (5.7%) (10 min)
.3 oz Styrian Goldings (3.8%) (10 min)

Yeast
WY1469 West Yorkshire Ale - no starter

Extras
1 tsp Yeast nutrient (5 min)

Water (mash)
Base Profile: Reno (brewersfriend.com)
107 Ca, 11.2 Mg, 44.1 Na, 63.7 SO4
Alkalinity 171.6, RA 88.7

Brewday: 10 February 2016
Mash: 13 qts @ 154F for 60 minutes + 2 qts @ 212F to get to temp
1st sparge: 12 qts @ 190F
2nd sparge: 13 qts @ 180F
Pre-boil volume:  gallons
Pre-boil SG: 10P (1.0)

Salt additions (to mash): 1 g Gypsum, 3 g Epsom salt, 4 g CaCl, 11 g Chalk, 5 g Baking Soda, 8 ml Lactic Acid (88%)

5.8 gallons at 64F to the fermenter; no aeration past transfer splashing.
Fermented in swamp cooler at 65F ambient.

13 February 2016: Visible activity stopped without any sign of the never-ending krauesen characteristic of this yeast. Removed from swamp cooler & agitated; sat at ambient (68F). Moderate surface bubbling—not a real krauesen yet—appeared over the course of the day.

Bottled: 2 March 2016
FG: 1.018
ABV: 3.5%
Bottled with 3.4 oz table sugar.

Moved final gallon onto Sour Culture No. 2.

Sour Bottled: 30 April 2016
FG: 1.013
ABV: 4.2%
Good lactic sourness.
Bottled with .3 oz table sugar.

Tasting