[Homeroast] Weight vs. Volume

John Nanci john at chocolatealchemy.com
Fri Dec 12 09:51:39 CST 2014


For clarification, this is only for espresso I am 
talking about.  I only measure by volume for my 
Brazen.  But I always weigh my greens...but 
mostly because I have a certified scale by my 
roaster and it can take 1 kg, so a few grams or even ounces hardly matter.

At 07:44 AM 12/12/2014, you wrote:
>I usually brew coffee with a Bunn Trifecta MB 
>and use a small digital scale (with a resolution 
>of .1 gm) that came with the coffee maker to 
>weigh out beans. For me, with this machine, I 
>use 25.0 grams of beans to 12 oz. of water. I 
>don't think that a .1 g difference would make 
>much of a difference to the final cup. Measuring 
>by volume might come close but there is so much 
>variability in the size of the beans that I 
>don't think it would be close enough.
>
>Jon
>
>On Dec 12, 2014, at 10:36 AM, Phil Palmintere 
><phil.palmintere at gmail.com> wrote:
> >
> >
> > I weigh whole beans using an inexpensive scale from Harbor Freight with a
> > 0.1 gram resolution.  I do this get 225 grams of greens to roast (Gene
> > Café), and I also weigh beans for use with a Clever Coffee Dripper (my "go
> > to" method of a cup of coffee in the morning; my preferred ratio is 22.7
> > grams of beans to 12 fluid oz. of water).
> >
> > I think the scale was under $10.
> >
> > But, it is not really that accurate.  I weigh the beans 2 or 3 times, and
> > the variation reported by the scale can be as much as half a gram or so.
> >
> > Phil
> >
> >
> > -----Original Message-----
> > From: Homeroast [mailto:homeroast-bounces at lists.sweetmariascoffee.com] On
> > Behalf Of John Nanci
> > Sent: Friday, December 12, 2014 7:29 AM
> > To: A list to discuss home coffee roasting. There are rules for this list,
> > available at http://www.sweetmarias.com/maillistinfo.html
> > Subject: Re: [Homeroast] Weight vs. Volume
> >
> > My experience (both as a shot puller and chemist) is that there can be
> > larger than acceptable variations in volume 
> when compared against weight and
> > that weight is the value you want to hold constant.  It's why 'good' bakers
> > weigh ingredients.  It's why chemists weigh reagents (even liquid ones many
> > times).  If the beans were spherical, then maybe I could see using volume,
> > but beans don't pack in a predictable manner.  2 or 3 beans are being
> > discussed.  I can take a volume measure, 'level' it, add 5 beans, level it
> > again and not see any difference at all.
> >
> > So, if it matters to you, weight is the way to go.
> >
> > That said, I use my portafilter to measure out my shots.  As level as I can
> > make it.  And simply enjoy the slight 
> variation.  They are never bad....just
> > not 100% repeatable.
> >
> > John
> >
> > At 07:18 AM 12/12/2014, you wrote:
> >> I personally feel that weighing is faster, easier, and more precise
> >> than measuring volume, and of course plan to continue weighing. I brew
> >> with a moka pot and also weigh water, again because it seems faster,
> >> easier, and more precise than trying to measure by volume.
> >>
> >> Brian
> >>
> >> On Thu, Dec 11, 2014 at 3:55 PM, John Dodson <j_dodson at sbcglobal.net>
> > wrote:
> >>>
> >>> I inquired about scales a few months ago.  I had a Salter food scale
> >>> with a resolution of 2.0 grams.  From the groups input I purchased a
> >>> Escali (from SM) resolution 0.1 grams. I took my old scale and put
> >>> just enough coffee to get to 22 grams, checked the weight on the
> >>> Escali 21.6 added 4 beans to get to 22. Then I put the beans back on
> >>> the Salter the weight was still 22 added one bean at a time 10 beans
> >>> until it just registered 24 grams, put the beans back on the Escali
> >>> and they weighed 22.6 grams.  I am pretty good at eyeballing 22
> >>> grams of beans but with the higher resolution scale I usually need to
> > add or subtract 2 or 3 beans.  For what its worth.
> >>>
> >>> John
> >>>
> >>>
> >>>
> >>> On Thursday, December 11, 2014 12:56 PM, Larry Dorman
> >>> <ldorman at gmail.com>
> >>> wrote:
> >>>
> >>>
> >>>
> >>> So I've read for a long time about people weighing out a specific
> >>> number of grams of whole beans before grinding for espresso.  I had
> >>> always just eyeballed it and gone by rough volume.  However, I got a
> >>> small gram scale and started weighing primarily for the purposes of
> >>> reducing waste, but also to see if I could appreciate the difference in
> > the cup.
> >>>
> >>> I've been weighing for a couple months now and my experience has been:
> >>>
> >>> 1)  The proper grams changes per roast... sometimes very little (1/5
> >>> gram) and other times by a lot (1.5 grams)
> >>>
> >>> 2)  Once I find the right grams for a give roast I do reduce both
> >>> over and under grinding incidents.
> >>>
> >>> 3)  I've had a slight improvement in the cup due to greater
> >>> consistency in how much coffee I end up with in the portafilter.
> >>>
> >>> So...  I can appreciate that there has been value in weighing the beans.
> >>> However, it seems I might be able to achieve the same by actually
> >>> measuring volume instead of eyeballing it.  This could be as simple
> >>> as drawing a line in the receptacle I'm currently using when I weigh.
> >>>
> >>> Any thoughts and other first-hand experiences anyone would like to
> >>> share on the matter?
> >>> _______________________________________________
> >>> Homeroast mailing list
> >>> Homeroast at lists.sweetmariascoffee.com
> >>>
> >>>
> >> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sw
> >> eetmariascoffee.com
> >>> <a href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's
> >>> Forum</a> <a href="http://www.sweetmarias.com/library">Our new
> >>> Coffee Library</a> _______________________________________________
> >>> Homeroast mailing list
> >>> Homeroast at lists.sweetmariascoffee.com
> >>>
> >>>
> >> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sw
> >> eetmariascoffee.com
> >>> <a href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's
> >>> Forum</a> <a href="http://www.sweetmarias.com/library">Our new
> >>> Coffee Library</a>
> >>>
> >> _______________________________________________
> >> Homeroast mailing list
> >> Homeroast at lists.sweetmariascoffee.com
> >> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.swe
> >> etmariascoffee.com <a
> >> href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's Forum</a>
> >> <a href="http://www.sweetmarias.com/library">Our new Coffee Library</a>
> >
> >
> > _______________________________________________
> > Homeroast mailing list
> > Homeroast at lists.sweetmariascoffee.com
> > 
> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sweetmar
> > iascoffee.com
> > <a 
> href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's Forum</a> <a
> > href="http://www.sweetmarias.com/library">Our new Coffee Library</a>
> >
> >
> > _______________________________________________
> > Homeroast mailing list
> > Homeroast at lists.sweetmariascoffee.com
> > 
> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sweetmariascoffee.com
> > <a href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's Forum</a>
> > <a href="http://www.sweetmarias.com/library">Our new Coffee Library</a>
>
>
>_______________________________________________
>Homeroast mailing list
>Homeroast at lists.sweetmariascoffee.com
>http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sweetmariascoffee.com
><a href="http://www.sweetmariascoffee.com/forum/">Sweet Maria's Forum</a>
><a href="http://www.sweetmarias.com/library">Our new Coffee Library</a>




More information about the Homeroast mailing list