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Old 01-27-2010, 03:49 AM   #1
Jul 2008
Portland, OR
Posts: 550
Liked 10 Times on 7 Posts

Inspired by the TH's easy to use spreadsheet, I brewed my first batch with adjustments to the mash.
I've brewed this same recipe with the same procedure 3 times before, just using straight Portland water, and each time I got 78% efficiency. This time, I added 3g each gypsum & CaCl, and my brewhouse efficiency improved to 91%. Before I get too much disbelief on the efficiency number, I don't remove trub, so it is artificially high.
Of course, this is just one data point, so I'm looking forward to repeating the experiment.

I'm wondering if the very low levels of minerals in Portland water may have some effect, as I've never gotten more than 81% on any other beer, and I generally get better efficiency with darker styles.

The recipe for 10g:
15.1# Pils
2# Munich
Mash at 149F for 90 min

Reason: correcting calculation error

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Old 01-27-2010, 03:25 PM   #2
david_42's Avatar
Oct 2005
Oak Grove, Oregon, USA
Posts: 25,599
Liked 158 Times on 148 Posts

My efficiency jumped when I started using pH5.2. I have very pure water also.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

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