mac batch #13.
Hauled all the brewing gear to Maine for a memorial day weekend brew. First outdoor brew with a turkey fryer, plus had hot and cold hose bibs right nearby. Great brewing setup, sounds of crashing waves make for better brewing I think. Enjoyed the help from friends, chiefly Kate X.
Left the brew log at home so I’ll have to live blog this one.
6.5 lb German pilsner
1.0 lb light wheat
0.5 lb Dextrine
Initial strike in 10 qts water at 168F for a target mash temp of 152.
Was 153F 30 min into mash. Mashed for a total of 60 minutes.
Sparge with 18 qts at ~174F, collected about 6.25 gal that measured 1.036 at 140F which I think corrects to about 1.048 [2011-05-31 edit] According to C.Lyons (1992), its closer to 1.052, but he’s using values for the density of water, I question whether that’s fully valid for a sugar-water solution. Going by those numbers, I ended up with 324 points. [/edit]
2.5 oz x 2.6% AA spalt at 60 min
0.5 oz x 2.6% AA spalt at 10 min
Post chill we ended up with about 4.9 gal that measured 1.044 at 71F. [Edit 2011-05-31] This corrects to 1.045 using every table or formula I’ve found. That means that post-chill I had 222 points. To recap, pre-boil: 324, post-boil: 222. Theoretically, these numbers should match, because during the boil, the only thing that leaves the pot is pure water in the form of steam, leaving all the sugars (points) behind. So basically, my numbers after the sparge are total crap. Either the corrections are no good, or I can’t get a reliable reading for some reason, or (perhaps most likely) my technique of using “the thief” to sample straight from the runoff bucket after the sparge is sucking up only the more dense wort near the bottom of the bucket. Next time, I will stir thoroughly, and report back. [/edit]
Pitched Wyeast Kolsch. Left in the basement shower stall because I’d hate for a wild ferment to make a mess out of that house, and because I bet the temp will be good there.