We bottled the stout tonight and I took the Final Gravity reading.
For those of you who recall when I brewed this beer, it came out much darker than I had anticipated. And it also came out heavier - an Original Gravity reading of 1.066 instead of an expected 1.059, which means 6.6% more dense than water, and about 12% more dense than I had planned. Well, if the yeast had fermented 75% of the sugar, which is what this particular strain of yeast is supposedly capable of, I would have ended up with a Final Gravity of 1.018 (1.8% more dense than water, for those not picking up on the trend here), and 6% alcohol. [values corrected, thanks to
skreidle]
Well, sports fans, again, there's a trend. And that is that this part didn't turn out as planned either. The Final Gravity reading was 1.026. So only about 60% of the sugars were fermented. In hindsight, I kind of saw this one coming (how's that for mixing your metaphors?). You see, I used a lot of dark extract in the base for this beer in addition to the black patent, chocolate, and roasted barley that I steeped. What all of this darkness means (in addition to making beer that is
really stinkin' dark) is that most of the sugars are non-fermentable. This was partly by design, since you need non-fermentable sugars to give a stout its thick, chewy feel. But I clearly overshot the mark on this and ended up with much more unfermented sugar than I had planned.
This puts it in between beer styles, so I'm not winning any competitions with it. ;) It has the gravity of a
Russian Imperial Stout, the bitterness of anything but an Imperial or
American Stout, and the alcohol content of anything but an Imperial or a
Foreign Extra Stout. So it's kind of a Bastard Stout. Which I guess could be in keeping with my intent to call it Norman Invasion Ale. I mean, you start with 1.066 and you end up with something that isn't like anything that came before it.
The pre-bottling taste test proves it to be predictably heavy, not too sweet, and you can definitely taste those roasted grains. I can't wait to see what kind of a head it develops and how it finally tastes. Speaking of head, I think I figured out why my last batch had several bottles that did not carbonate properly. I noticed that some of the bottle caps did not appear to be on straight, and I'm betting they just didn't keep the pressure and went flat. I think I have identified (and eliminated) the offending style of bottles, so hopefully this batch will be properly carbonated.
So there ya go. Check back after February 9th for the final verdict!