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27-04-2010, 08:36
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I promised you examples of parti-gyles and I'm not a liar. So here they are. Examples of part-gyling. It's going to be a white-knuckle ride so hang on tight. I really can't remember last time I had this much fun.

Let's kick off with a Truman example from the 1930's. Where three different-strength Milds are being magicked from four worts. I think you're going to enjoy it. (Not sure why.)


http://2.bp.blogspot.com/_CHrKKDU9290/S9WY7VKdUjI/AAAAAAAAG4A/JIck_S4axsc/s400/Truman_1930_XXXM_7_XX_gyles.JPG (http://2.bp.blogspot.com/_CHrKKDU9290/S9WY7VKdUjI/AAAAAAAAG4A/JIck_S4axsc/s1600/Truman_1930_XXXM_7_XX_gyles.JPG)
First is XXXM. Of which 146 barrels at a gravity of 17.1 (1047.3) were produced.





Next is No. 7. Of which 136 barrels at a gravity of 14.3 (1039.5) were produced.




Finally XX. Of which 135 barrels at a gravity of 12.2 (1033.8) were produced.








The main point to note is that all of the three different-strength beers contained some of each wort. Some of the strongest and some of the weakest. (OK, in this particular eample there seem to have been a couple of slightly differnet weak worts, but let's just ignorethat for the sake of simplicity.)

Here's that in table form:


18th Nov 1930 Truman XXXM barrels gravity SG grav points 52 29 1080.3 1,508 33 20 1055.4 660 38 8 1022.2 304 23 1 1002.8 23 146 17.09 1047.3 2,495 Source: Truman brewing records


18th Nov 1930 Truman 7 barrels gravity SG grav points 29 29 1080.3 841 33 20 1055.4 660 38 8 1022.2 304 36 3.8 1010.5 137 136 14.28 1039.5 1,942 Source: Truman brewing records


18th Nov 1930 Truman XX barrels gravity SG grav points 18 29 1080.3 522 33 20 1055.4 660 38 8 1022.2 304 46 3.5 1009.7 161 135 12.20 1033.8 1,647 Source: Truman brewing records
I would continue with another example. But I don't want to overexcite you. Best wait until tomorrow.https://blogger.googleusercontent.com/tracker/5445569787371915337-6033035153567915406?l=barclayperkins.blogspot.com


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