The interesting part of this brew is the coffee. I've read a number of articles and posts about brewing with coffee, some with conflicting suggestions. I ended up using some Dunkin Donuts coffee I had around the house. It's a medium roast and one of the fairly consistent suggestions I've seen is to use a lighter roast since the darker beans tend to shed more oil which can effect head retention.
How to add the coffee seems to be the biggest point of discussion. I decided to cold brew the coffee and add it at the end of the boil. I put about 6 tablespoons of grounds in a container and added cold water to about 2 cups. I refrigerated for about 2 days. The hope is that the cold brewing will minimize the bitterness in the coffee.
I filtered the coffee and added it to the end of the boil, just long enough to sterilize. The rest of the boil was a pretty typical porter. English pale malts, some crystal malts, and some chocolate malt. An ounce of Northern Brewer for bitterness and no additional hops since I don't want to over bitter and I want the coffee and malt flavors at the forefront. The malt bill is a little odd since I wanted to use up some leftover grains I had laying around, thus there's standard UK 2-row and Maris Otter as well as multiple kinds of crystal.
I racked to secondary today and the gravity was at 1.013 which is a little lower than the estimate. Either the yeast was particularly good this go around or I could have mashed a little higher to get more dextrins. The flavor is pretty good for a non-carbonated state. I'll secondary for a little while to let it clarify a little more before I bottle. I'll probably bottle the same time as the Festivus Feats of Strength.
Type: All Grain
Batch Size: 5.00 gal
|Boil Size: 6.41 gal||Asst Brewer: Jenn|
|Boil Time: 60 min||Equipment: Brew Pot (7.5 gal) and Cooler (48 qt)|
|Taste Rating(out of 50): 35.0||Brewhouse Efficiency: 75.00|
Est Original Gravity: 1.049 SG
|Measured Original Gravity: 1.049 SG|
|Est Final Gravity: 1.016 SG||Measured Final Gravity: 1.013 SG|
|Estimated Alcohol by Vol: 4.30 %||Actual Alcohol by Vol: 4.69 %|
|Bitterness: 29.6 IBU||Calories: 218 cal/pint|
|Est Color: 28.7 SRM||Color: |
|Mash Name: Single Infusion, Full Body||Total Grain Weight: 9.28 lb|
|Sparge Water: 3.71 gal||Grain Temperature: 72.0 F|
|Sparge Temperature: 168.0 F||TunTemperature: 72.0 F|
|Adjust Temp for Equipment: FALSE||Mash PH: 5.4 PH|
|Mash Notes: Simple single infusion mash for use with most modern well modified grains (about 95% of the time).|
Carbonation and Storage
|Carbonation Type: Corn Sugar||Volumes of CO2: 2.4|
|Pressure/Weight: 3.8 oz||Carbonation Used: -|
|Keg/Bottling Temperature: 60.0 F||Age for: 28.0 days|
|Storage Temperature: 52.0 F|
|Hit OG on the mark, no major problems with the brew day. A little under mark for volume. |
10/28/10: Moved to secondary, gravity is 1.013
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