Friday, October 29, 2010

Up Dosing in the Siphon

Friday's puzzler for you caffeine geeks: why does a vac pot seem to require consistent up dosing to brew a good cup?  I tried SCAA cupping standard ratios, and the brew tasted acrid and over-brewed.  Upping the dose to 11.5g per 150ml (40% up dose) produced much more satisfactory results.


My own two cents: The bottom-up agitation combined with top dumping of the coffee means the coffee is particularly hard to mix into the water consistently throughout the relatively short brew cycle.  If it takes 20-30 sec to wet all the coffee, that's 25% of the brew cycle.  A higher dose may be a shortcut to better brewing ratios from the start.

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