Monday, August 30, 2010

Post 100! Collaborator lab results

I just noticed as I was logging in that this is going to be post 100 of my blog! That means, more or less, I've posted about 100 recipes on here too. A lot of posts do not have a recipe, but some have multiple. So let's call it just shy of 100 recipes, give or take a few (I'm not going back to count, are you?).

Anyway, I finally pleaded and begged and bugged the OBC enough to release the Widmer Collaborator lab results which should have been out a long time ago. I think the competition was in May, and the lab testing was done on May 27th. I was really excited to see the lab results come in, since I have never had any scientific QC testing on my beers, and I was curious to see if my measurements would jive with the lab-ometers. Most of them did, gladly. And there was a ton of other stuff which I was hoping they would measure, but unfortunately that did not come with the testing. I was hoping to see dissolved oxygen levels, bacterial count, and carbonation level measurements also. Well, it was all free anyway. Thanks again Widmer.

On to the results. First the Baltic Porter that Paul and I brewed, which was a finalist, but did not get picked as a Collaborator beer. I don't think I ever did a tasting of this for the blog, and I should soon. It was pretty good but not quite malty enough. But still, quite tasty.
Beer Analysis - BALTIC PORTER


SpecificGravity 1.01431.015
Alcohol(%v/v) 8.608.06
(%w/w) 6.706.28
Original Gravity in Percent Plato 19.0918.4
Real Degree of Fermentation 67.766.2
Calories 260.1
pH 4.83
Color (in Lovibond) 103.037.1 (SRM)
Bitterness Units (International Method) 31.930.2

Evaluating the results: The measurements were all quite close here, except for the color. I don't really understand that one honestly. For one thing, from what I quickly read online, SRM is the same as Lovibond. If so, then I'm way off, but color is such an obvious thing in brewing that I don't really care about ever having it checked by a lab.

On to the Saison, which was not a finalist and therefore also not picked as a winner. This was a pretty good beer, but as I mentioned it just didn't have a great aroma profile. It was just a bit subdued and not outstanding.

Beer Analysis - SAISON Results MY MEASUREMENTS:
SpecificGravity 1.0035 1.007
Alcohol (%v/v) 6.33 6.2
(%w/w) 4.99 4.9
Original Gravity in Percent Plato 12.79 12.6
Real Degree of Fermentation 76.5 71
Calories 166.2
pH 4.29
Color (in Lovibond) 3.1 3 (SRM)
Bitterness Units (International Method)
28.3 28.3

Evaluating the results: It looks like I was really dead-on most of my numbers for this beer, except for the final gravity. This could have been a bad measurement by me, but more likely it was from continued fermentation in the bottle. We all know how saison yeasts go slowly but surely through their final stages of fermentation. But if that's the case, I would have expected carbonation levels that were pushing bottle bombs, and I didn't have that problem. The beer tasted as if it were carbed to about 3.5 volumes I'd guess, and that was with a pretty substantial dose of priming sugar that would have equaled 6+ oz. per 5 gallons.

All in all, I'm very happy to see I've hit my numbers on these beers. At least at the 30 IBU range, my IBU calculations are pretty close to the actuals. I would guess that they start to skew quite a bit as the IBU's go up though.

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