[Homeroast] Using CO2 to preserve freshness?
mcKona at comcast.net
Mon Apr 19 19:34:01 CDT 2010
In the context of "does oxygen need to be present for flavor development
during rest" this has indeed been tested. Tested and discussed many times!
Search the Homeroast List archives. Specifically vac' sealing in mason jars
with dome lids directly after cooling. Also heat sealing mylar valve bag
then vac sealing. Also vac sealing in Foodsaver bag. Oxygen need not be
present for flavor development. At least not present in any substantial
amount since vac sealing does not evacuated 100% of the oxygen.
O2 scrubbers also tested for prolonging freshness longevity, total bust.
For years all my home roasts went directly into mason jars and vac sealed.
Also quit the practice years ago. Ed nailed the why. The only time I now vac
seal a roast is if it's some special bean that's no longer available I want
to have around for a goodly time. Then it's vac sealed and frozen after
resting 5 to 7 days. Still drinking quite excellent Panama Esmeralda now and
then from my last roast Dec '09, said roast of greens that had been vac
sealed and frozen a good 6 months.
Slave to the Bean Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer, some recipes etc:
Ultimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
Sweet Maria's List - Searchable Archives
> -----Original Message-----
> From: homeroast-bounces at lists.sweetmariascoffee.com
> [mailto:homeroast-bounces at lists.sweetmariascoffee.com] On
> Behalf Of Mike Koenig
> Sent: Monday, April 19, 2010 10:19 AM
> To: A list to discuss home coffee roasting. There are rules
> for this list,available at
> Subject: Re: [Homeroast] Using CO2 to preserve freshness?
> Actually, my proposed experiment has little to do with
> preserving coffee
> (though it has the side effect of putting to bed the debate of whether
> various storage methods are worth their effort) and more to do with
> developing an understanding of what goes on during the rest
> period. My (as
> yet untested) hypothesis is that oxygen is necessary for some
> of the flavor
> development that goes on during the rest, and that taking
> steps to exclude
> oxygen may delay staling, but also slow the flavor
> development process that
> most of us observe during the "rest" period.
> On Sun, Apr 18, 2010 at 11:02 PM, Ed Needham
> <roast at homeroaster.com> wrote:
> > I'm curious why it is such an issue for preserving the
> beans? We are
> > homeroasters. We have absolutely the freshest beans in the
> world. We can
> > roast any time we want. There's no need to preserve our beans.
> > Roast--use--repeat. On that rare occasion where you have
> more beans than
> > you can use in two weeks, freeze them in a sealed glass jar
> or a thick mylar
> > zip-loc coffee bag. They will be as good as when you put
> them in there
> > several weeks from when you froze them.
> > *********************
> > Ed Needham
> > "to absurdity and beyond!"
> > http://www.homeroaster.com
> > *********************
> > ----- Original Message ----- From: "Yakster" <yakster at gmail.com>
> > To: "A list to discuss home coffee roasting. There are
> rules for this
> > list,available at http://www.sweetmarias.com/maillistinfo.html" <
> > homeroast at lists.sweetmariascoffee.com>
> > Sent: Saturday, April 17, 2010 6:05 PM
> > Subject: Re: [Homeroast] Using CO2 to preserve freshness?
> > Putting dry ice in a sealed container is a recipe for
> disaster. A popular
> >> trick is to put a chunk of dry ice in a 1 liter pop (PET)
> bottle and when
> >> the dry ice sublimates, the bottle explodes. This could
> be disastrous in
> >> glass.
> >> As for sealing mason jars, I picked up one of those
> foodsaver attachments
> >> and pull a vacuum on my greens stored in jars, real handy.
> I'd though of
> >> trying the oxygen absorber packets I mentioned earlier,
> they actually pull
> >> a
> >> vacuum too, but I normally use my roasted within 14 days
> and am currently
> >> pinching pennies, but if you try this, let us know.
> >> -Chris
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