[Homeroast] Using CO2 to preserve freshness?

Mike Koenig koenig.mike at gmail.com
Mon Apr 19 12:19:12 CDT 2010

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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