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Netphilosopher
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Joined: 14 Jan 2011
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Location: USA
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Posted Fri Jan 21, 2011, 6:58am
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jkoll42
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Joined: 2 Jan 2010
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Location: Pennsylvania
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Espresso: VBM DD V3, Gaggia Baby Class
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Posted Fri Jan 21, 2011, 10:31am
Subject: Re: Post Roast Coffee Bean Care
 

Prediction:  They will all be equally stale and undrinkable.

I actually wanted to do a similar experiment but have no time so I would be interested to see results, however...... with your current setup all of the coffee will be completely stale after 6 months.  There really is no point in doing this for that length of time.  Coffee is stale after about 2 weeks unless frozen.  

If I could make a suggestion, why not simulate various storage methods to see what keeps the coffee fresher during a period when it is still considered fresh.  Perhaps cup the beans at 7 and 14 days while simulating daily use by opening and closing the storage method daily.  I think a one way valve, vacuum bag, open bowl and ball jar would be representative of the various mothods commonly used.  

This is something that I would be very interested to see the results of.
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Netphilosopher
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Joined: 14 Jan 2011
Posts: 1,602
Location: USA
Expertise: Just starting

Posted Fri Jan 21, 2011, 1:45pm
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CeeZee
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Joined: 16 Feb 2006
Posts: 88
Location: Wynnewood, PA
Expertise: I love coffee

Espresso: Quick Mill Silvano
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Drip: Technivorm
Roaster: Behmor, BM/HG, FR8, iRoast2
Posted Fri Jan 21, 2011, 2:19pm
Subject: Re: Post Roast Coffee Bean Care
 

jkoll42 Said:

Prediction:  They will all be equally stale and undrinkable.

I actually wanted to do a similar experiment but have no time so I would be interested to see results, however...... with your current setup all of the coffee will be completely stale after 6 months.  There really is no point in doing this for that length of time.  Coffee is stale after about 2 weeks unless frozen.  

If I could make a suggestion, why not simulate various storage methods to see what keeps the coffee fresher during a period when it is still considered fresh.  Perhaps cup the beans at 7 and 14 days while simulating daily use by opening and closing the storage method daily.  I think a one way valve, vacuum bag, open bowl and ball jar would be representative of the various mothods commonly used.  

This is something that I would be very interested to see the results of.

Posted January 21, 2011 link

I agree totally. I'd also like to see the results from 7 and 14 days storage with various methods you mention.

Personally, I use Mason jars that I don't tighten until the next day. The 150g that I had been roasting at a time fits perfectly in the jar and I get two pots of coffee out of it. My espresso is an exception (I make a double amount) and it goes into a Bodum glass container that has air-tight seal. I don't fully close that until the second day either. The espresso seems to stay drinkable much longer (up to the 14 days) but I never have the other roasts around even a week. We drink espresso only on the weekends. Although, my Behmor batch of espresso is so much better that I've been sneaking an espresso in every other day or so after lunch! Huge improvement with the espresso using the Behmor.
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dana_leighton
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dana_leighton
Joined: 11 Jan 2002
Posts: 1,937
Location: Little Rock, AR
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Espresso: Isomac Relax; Caferina...
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Posted Fri Jan 21, 2011, 2:31pm
Subject: Re: Post Roast Coffee Bean Care
 

I recently purchased some oxygen absorbers to use for short-term coffee storage, but they are really meant for long term storage. The combination of the oxygen absorbers and freezer might do the trick for 6 months storage. Mitsubishi is the original manufacturer, and they even market a type specifically for coffee that absorbs both oxygen and CO2. Click here for brief information on that.

Basically oxygen absorbers rely on oxidation of iron to remove the oxygen. THey are said to create heat during the process, but I don't believe that would harm the beans. THey are also said to not work as quickly at cold temperatures (although there are some fast-acting types that do), so may be best to have them do their work before freezing. They come in different sizes, based on the volume of air designed to be effective for (20cc-500cc). The retail outlet I used was Sorbent Systems

I have not yet opened the bag (once opened they need to be used or resealed in a vacuum), but plan today to seal up some roasted beans. I plan to vac-seal in a mason jar using foodsaver, and an oxygen absorber inside. I will also include an oxygen detection tablet to see if the seal stays good. I do not plan to store for long term - just a couple weeks. If that works okay (keeps seal and oxygen free) I may try for a longer test later.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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CeeZee
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Joined: 16 Feb 2006
Posts: 88
Location: Wynnewood, PA
Expertise: I love coffee

Espresso: Quick Mill Silvano
Grinder: Baratza Preciso
Drip: Technivorm
Roaster: Behmor, BM/HG, FR8, iRoast2
Posted Fri Jan 21, 2011, 2:40pm
Subject: Re: Post Roast Coffee Bean Care
 

dana_leighton Said:

I recently purchased some oxygen absorbers to use for short-term coffee storage, but they are really meant for long term storage.

Posted January 21, 2011 link

Never heard of them - what a find! Do you think they can be reused?
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Joel_B
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Joel_B
Joined: 9 Oct 2007
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Location: Pacific NW
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Espresso: Astra Mega II
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Posted Fri Jan 21, 2011, 2:41pm
Subject: Re: Post Roast Coffee Bean Care
 

Netphilosopher Said:

You have a very good point, but not sure that all coffee goes undrinkably stale after 2 weeks in roasted bean form in a sealed bag with 1-way valve.  Check many of the bags on a Starbuck's shelf and you see many are at least 3 weeks old and have "use by" dates numbering into the months - unless I was reading the date codes wrong.  I'll have to go and recheck...

Posted January 21, 2011 link

And most starbucks coffee is stale.  The use by dates are just that, starbucks' recommendation of when to use them by.  From what I know, there is no (for the consumer) markings that tell you when the coffee was roasted.

Netphilosopher Said:

My thinking is that oxygen is the enemy to coffee freshness.  

Posted January 21, 2011 link

Oxidation is probably the biggest enemy to coffee freshness, but there's some other things happening like continual CO2 emission and the oils can go rancid.  

I don't believe coffee goes undrinkably stale after 2 weeks when dealing with a brewing method such as press, drip, vacpot, etc.  I do find coffee much past the 2 week mark not suitable for espresso.  I think a major part of this is getting a decent pull becomes so difficult.

Dana, I'm really interested in the oxygen absorbers.  Please report back your findings!
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dana_leighton
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dana_leighton
Joined: 11 Jan 2002
Posts: 1,937
Location: Little Rock, AR
Expertise: I live coffee

Espresso: Isomac Relax; Caferina...
Grinder: Macap MXK; Baratza Vario-W;...
Vac Pot: Yama 5-cup
Drip: Technivorm; CCD; Melitta
Roaster: Poppery I w/PID controller
Posted Fri Jan 21, 2011, 2:43pm
Subject: Re: Post Roast Coffee Bean Care
 

CeeZee Said:

Never heard of them - what a find! Do you think they can be reused?

Posted January 21, 2011 link

No they are a one-shot thing. THey are cheap though - Even in the small quantity I bought (200 20cc absorbers), after shipping and a small-order surcharge, they came out to about $.16 each I think.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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yakster
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yakster
Joined: 25 Feb 2009
Posts: 1,026
Location: San Jose, CA
Expertise: I live coffee

Espresso: Gaggia Factory / La Peppina...
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Roaster: Behmor
Posted Fri Jan 21, 2011, 3:36pm
Subject: Re: Post Roast Coffee Bean Care
 

Dana,

Let us know how they work out.  I found one of these at the bottom of a can of Wasabi covered peas and research turned up links to using these for emergency rations / survival food stores for preserving grains for years at a time.

I read the opening post on this thread about caring and distributing homeroast, but I'm unclear about the original poster's goals?  What timeframe do you need to store the roasted coffee over?  After thinking about the oxygen absorbers and my own personal needs, I decided that freezing my roasted coffee in canning jars for up to a month or two was going to work for me (except for that jar of Sweet Maria's New Classic Espresso that I dug out of a freezer after a year) and any extra expense probably wasn't going to make much of a difference for the short timeframes I deal with.

 
-Chris

LMWDP # 272
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rgrosz
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Joined: 4 Mar 2010
Posts: 134
Location: Atlanta, GA
Expertise: I love coffee

Espresso: Gaggia Classic
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Roaster: HotTop B-2K, Behmor
Posted Tue Jan 25, 2011, 7:37pm
Subject: Re: Post Roast Coffee Bean Care
 

Netphilosopher Said:

You have a very good point, but not sure that all coffee goes undrinkably stale after 2 weeks in roasted bean form in a sealed bag with 1-way valve.  Check many of the bags on a Starbuck's shelf and you see many are at least 3 weeks old and have "use by" dates numbering into the months - unless I was reading the date codes wrong.  I'll have to go and recheck...

My head spins... LOL

Posted January 21, 2011 link

YES, all coffee beans go stale after 2 weeks. As a home roaster, this is easy for you to verify.

When I started using the Behmor, I roasted a pound of coffee. I put the beans in a 1-way valve bag on the counter. I used the beans for drip coffee every day, and noticed that the flavor of the coffee started to fade after 7 days. Now I store my "extra" coffee beans in 1-way valve bags in the freezer.

<DATE CODES>
The date codes on coffee such as Starbucks are a joke. Unless it gives you information like "roasted on this date", the coffee is likely MONTHS old. I went to a local grocery store that carries coffee beans from Intelligentsia Coffee and Counter Culture Coffee. I was SO excited, since they both actually show the date the beans were roasted. My excitement turned to dismay when I realized that the date was in October 2010. The coffee was probably better than Starbucks, but definitely way too old.

 
Life is too short to drink bad wine (or bad coffee)
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