IRRC the comparison test was with 3 differently packaged roasts of the same
bean. All packaged directly from roast. Comparison purpose was to see how
beneficial for longer storage, tested around 3 weeks IIRC. One package
FoodSaver vac bag sealed, one package FoodSaver vac bag sealed with
Sorbentsystems Oxygen Absorber added, one package in simple zip lock bag.
This testing was after discussions of the limitation of home vacuum sealing
systems to bring O down to extrememly low levels (more typically 85 to 90% O
removed IIRC) while the absorbers are advertised being able to bring O down
to 0.01% when used with vac sealing and or nitrogen flush.
One of the problems with the Oxygen Absorbers was/is they are not just
"oxygen" absorbers. The package states Oxygen AND Carbon Dioxide Absorber,
CO2 absorbtion is not mentioned on their website description but it is on
I suspect the flatness may have been attributable to the CO2 absorbtion as
well as near total O removal affecting the proper "aging" or "resting". I
also suspect that if closed container (not vac'd) rested 2 or 3 days and
then vac sealed with the Absorbers taste results would have been much
I still don't believe home mason jar vac sealing detracts from flavor
developement. I do believe it does slow both the "staling" and the
"resting". Benefit giving a longer freshness sweet curve. Possible negative
takes longer rest to peak, a 4 day vac rest more like 1 day non-vac.
Comparing a 2 day open air rested bean to the same 2 day vac sealed rested
the open will indeed have more complex flavor development. Compare a 2 day
open air rest to a 4 or 5 day vac rest and find the vac rest fully
developed. Compare a 10 day non vac sealed roast to a 10 day vac sealed
roast and the clear flavor winner with be vac'd.
I've never advocated buying a vac packing system strictly for coffee use.
That is just one of it's uses. I won't get into the myriad storage features
and benefits again, done it dozens of times.
Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer etc.http://mdmint.home.comcast.net/coffee/Rosto_mod.htmFrom: "Alchemist John"
Sent: Sunday, April 24, 2005 7:51 AM