Nothing lengthy to share here, but I do have a couple of short thoughts regarding brewing:
Over-extraction and under-extraction are terms to describe extraction efficiency, not brew strength. In fact, those two things — extraction efficiency and strength — are often used interchangably when they are, in fact, totally separate and only incidentally related.
Stir your brews when finished brewing. The beginning of the brew cycle extracts a different set of solids from the end of the brew cycle, so treat it like that and stir those brews.
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imcellular
December 26, 2011
Great, simple advice. Especially true of espresso – ever drink the crema alone?!