No small grainpro bags yet, although I am wondering if the bags sold
to keep produce fresher in the fridge have similar properties (?). We
have 1000 GrainPro bags here for our use, and I take them to origin
countries to give to our producers to pack our coffee, since one of
the great benefits comes as the coffee heads down from the mountains
to muggy port cities, and during ocean transport. We also did a test
with 4 mil USDA/FDA approved bags but GrainPro bags were slightly
better. Vacuum packing results have been slightly better than GPs,
but not extraordinarily better, and for the mills we work with, the
GP is so easy to use. VP requires equipment, expensive bags (well,
GPs arent cheap either, really, for a plastic bag) and lots of boxes
too. GP bags just line the current jute bag on the inside.
Let me point out that it is not a cure-all, and nothing preserves
coffee indefinitely. The benefits are much better from some origins
than others. Dry Process coffees shluld only be packaged this way in
special circumstances. GP and Vac Pack can DAMAGE DP coffees, and
ones that have not undergone a full rest in parchment (reposo). If
the coffee has high water activity, it will harm the cup quality. (I
would delve into this more but I have a fulld ay of roasting samples
and cupping! we are saving up for our own water activity meter for
sweet marias, they are pricey!) . Anyway, as far as GP we feel they
add 3-6 months to the shelf life, conservatively, Vac pack has
longer term benefits if they are multi-laminate bags ... 9 months.
It's been great for us since we have these really expensive coffees
in vac packing, the $100+ Esmeralda we still have, and the $80
Guatemala CoE #1. I cup them regularly and they are stellar. So you
can imagine how grateful I am to the positive effects of Vac Bagging.
By the way, Mike McKoffee is the earliest advocate of vac packing and
I own him a debt of gratitude.
Freezing coffee - nooooo..... under perfect conditions, commercial
freezer, thawing before roasting ... sure. But chance of damage to
coffee is too great... I ove George Howell but disagree with him on
this point. And in the final analysis, there is NOTHING like fresh,
new crop , properly rested coffee
Off to cup ....
PS: yes, we are updating our very old Green Coffee Storage page to
refelct our new attitudes. But breathable cloth or paper bags are
still a great option in mild climates where greens will be used in
6-8 months from arrival.
"Great coffee comes from little roasters" - Sweet Maria's Home Coffee Roasting
Thompson & Maria -http://www.sweetmarias.com Sweet Maria's Coffee - 1115 21st Street, Oakland, CA 94607 - USA
phone/fax: 888 876 5917 - info_at_sweetmarias.com
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