HomeRoast Digest


Topic: [coffee] Re: +comparing various roasting methods (42 lines)
1) From: Rick Farris
It used to be dogma here (Or was it catma?  I can never remember the
difference) that vacuum resting accelerated the outgassing, but then
Barry Jarret (sp?) came by with some references to studies done on just
that topic and it turned out that the "internal impedance" of the
outgassing product is several orders of magnitude beyond what you can
affect with a 25" vacuum.
Translation: vacuum resting has very little effect on outgassing.
It gets worse, though. (The previous part is science, and pretty much
unassailable.  What's coming up has some conjecture.)
It is the belief of some people that I respect that in order for coffee
to undergo the complex set of chemical reactions that we call "resting,"
oxygen must be present.
Although I was among the most fervent of believers in vacuum resting, I
no longer vacuum my beans except for the rare circumstance when I plan
to freeze them for more than two weeks.
My general resting strategy these days is to loosely cover beans that I
intend to use within a week and to seal in mason jars and freeze those I
plan to use in the one-week to two-week timeframe.  Generally speaking,
though, I roast each weekend for the next week and that's it.
-- Rick


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