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What size mason jars
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BarryR
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Joined: 21 Nov 2010
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Posted Thu Feb 13, 2014, 11:23am
Subject: What size mason jars
 

I decided mason jars are probably one of the best ways to store coffee.
I have a Hottop so my max roast will usually 275 gms (9.7 oz) which means about 8.5 oz roasted.
What size jar would suit me best.
Ideally I'd want 8.5 oz to just fit (with a little fudge factor for low density beans).
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emradguy
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emradguy
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Posted Thu Feb 13, 2014, 12:34pm
Subject: Re: What size mason jars
 

Here's what I've found regarding bean capacity of the Ball Canning Jars...

4oz ~ 45g beans
8oz ~ 100g beans
16oz ~ 200g beans

I use all three and have also found that it's good to have at least a couple of the two smaller sizes around, so that you can downsize head space when necessary.  I fill the jars, then whack them with my palm to settle the beans, then fill 'em, some more.  I place the lid on and put the band very loosely ove the top, and  then allow the beans to degas overnight before tightening the band - thinking the CO2 released will drive out residual air, since it's denser and working it's way out of the bean.  However, I don't roast, so I'm doing this with beans that are about 2-3 days off roast.

 
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JerDGold
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Posted Fri Feb 14, 2014, 9:30am
Subject: Re: What size mason jars
 

I just bought some ov these mason jars, and while I have nothing to add to this discussion about size and weight, I thought you'd be interested in the link.
http://www.amazon.com/gp/product/B0000CFTV3
Solid construction, I love the look of the blue top, and the price seems to be pretty damn fair.  Let me know if you decide on something else, as I may want to buy some more.
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emradguy
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emradguy
Joined: 31 Mar 2011
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Posted Fri Feb 14, 2014, 10:03am
Subject: Re: What size mason jars
 

the fliptop jars/bottles I've used in the past don't seem to have nearly as good sealing quality as the Ball canning jars. My suspicion is that it's due to the fact that they only have a couple of points where they really clamp down for the seal, rather than a screw on band that applies pressure evenly around the entire ring,  I'd be interested to hear how long those last you.

and to expound on my previous post...I canned 5 pounds of beans last night, using a combination of 8oz and 16oz jars. Al were from REd Bird.  I had 1# Guatemala Bella Carmona (for press), 2# of RB Decaf, and 2# of Blue Jaguar.

I put the GBC into 5 8oz jars, and the other two bean blends were each split into 5 16oz jars (10 jars total).  All of the jars were full to capacity with no leftover.  Ie, it worked out perfectly.

 
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Always remember the most important thing is what ends up in your cup!
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Buckley
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Joined: 25 Jan 2011
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Posted Fri Feb 14, 2014, 11:36am
Subject: Re: What size mason jars
 

emradguy Said:

I don't roast.

Posted February 13, 2014 link

Dude! What's the hold up?  

P.S. Good conribution on the weight/volume configs of the cannnig jars.
Also, I have good luck with reused glass jars, selected for those that are air tight.  I do not worry too much about purging the O2 with CO2, but it makes sense,

B
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emradguy
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emradguy
Joined: 31 Mar 2011
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Espresso: Duetto II; Twist v2
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Posted Fri Feb 14, 2014, 12:22pm
Subject: Re: What size mason jars
 

:)

1) lack of free time
2) readily available great quality consistently roasted beans

 
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BarryR
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Location: Wilbraham
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Posted Sat Feb 15, 2014, 9:45am
Subject: Re: What size mason jars
 

I roasted a 1/2 lb of Costa Rican which came out to 6.8 oz and just fit in a pint mason jar.
So I guess I have my answer. 1/2 lbs green will just about make it into a pint jar.
I may end up getting some pint and some 1.5 pint jars.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,722
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
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Roaster: gave it a try, decided no
Posted Mon Feb 17, 2014, 8:11am
Subject: Re: What size mason jars
 

I just use zip top freezer bags, they are always the right size as long as you do not put more in the bag than they hold and can not close the zip top, they are easy to remove the air and when less than to the top full, they mold easily to fit the available space in your freezer.

A lot of people prefer the jars, that's fine, there are other options too.

 
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Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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msboo
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Joined: 10 Nov 2012
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Location: Kentucky
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Posted Sun Mar 23, 2014, 2:58pm
Subject: Re: What size mason jars
 

I use the 8oz Ball jars, love how they seal. Fill up 4 jars then a 5th at 1/2 full when getting a fresh roasted 1 lb bag. Upon opening a full jar I get that fresh "pop" or "puff" sound. We go thru a lb every 6-8 days depending, coffee is always fresh and flavorful.

Those "last minute" times when I run up the street to care for my grandson I must take my coffee SO grab the Aeropress, weigh/grind ahead (yikes!) for 2 big cups and put grinds into 2 spare jars. Works out pretty good, small jars are handy.
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