I mentioned about the scribbled notes in the inside cover of brewing logs. Here's your chance to look at some.
These appear in the front of a Barclay Perkins covering 1899 and 1900:
It gives an indication of how recipes were tweaked to cope with changes in the raw materials. For example, you'll see that it notes when the latest season's malt and hops were first used. You can also see how the hopping rate for X was changed several times: increased to 10 lbs per quarter, reduced to 9, reduced to 8, then increased to 9 again.
But my personal favourite is: "our freezing machine broke down". Then three weeks later "men finished & fixed refrigerator". I know. I'm weird.
The Historic Rise in Adjunct Rate, the Historic Fall in Hop Rates. Bingo. - A table, attractive due to its simplicity and comprehensive reach, indicates that in approximately 35 years before 1914, the average amount of hops used ...
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