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Discussions > Coffee > Machines > How Much Coffee?  
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Netphilosopher
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Joined: 14 Jan 2011
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Posted Sun Jul 10, 2011, 2:20pm
Subject: How Much Coffee?
 

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keithdiehl
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keithdiehl
Joined: 15 Jun 2011
Posts: 13
Location: State College, PA
Expertise: I love coffee

Espresso: Gaggia New Baby
Grinder: Baratza Vario, Starbucks...
Vac Pot: Yama (8 and 5 cup)
Drip: Clever Coffee Dripper
Roaster: Behmor 1600, FreshRoast +8
Posted Mon Jul 11, 2011, 7:46am
Subject: Re: How Much Coffee seems to be the question.
 

There is a handy chart at sweetmaria's listing water/coffee/infusion time for many popular coffee extraction methods. I see (from running Netphilosopher's equation on a few of the variables) that these figures match pretty closely to what you would get from calculating it all out, so this would be a great quick reference chart for the non-mathematically inclined (like me). The chart can be found at http://www.sweetmarias.com/brewinstr/grind.brew.php (Thanks, Sweet Maria's!)

Thanks, Netphilosopher, for your post!  All best!

 
Keith

Do I like my coffee black?  There are other colors?
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chasemonster
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chasemonster
Joined: 3 Jun 2010
Posts: 364
Location: Chicago
Expertise: I love coffee

Espresso: Rancilio Audrey
Grinder: Hario Mini Mill
Drip: V60
Posted Mon Jul 11, 2011, 1:29pm
Subject: Re: How Much Coffee seems to be the question.
 

keithdiehl Said:

There is a handy chart at sweetmaria's listing water/coffee/infusion time for many popular coffee extraction methods. I see (from running Netphilosopher's equation on a few of the variables) that these figures match pretty closely to what you would get from calculating it all out, so this would be a great quick reference chart for the non-mathematically inclined (like me). The chart can be found at http://www.sweetmarias.com/brewinstr/grind.brew.php. (Thanks, Sweet Maria's!)

Posted July 11, 2011 link



That is very helpful information.

(Note: for the link to work, do not include the period at the end)

http://www.sweetmarias.com/brewinstr/grind.brew.php .
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Netphilosopher
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Posted Tue Jul 12, 2011, 3:55am
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Netphilosopher
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Posted Tue Jul 12, 2011, 4:11am
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RapidCoffee
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RapidCoffee
Joined: 4 Dec 2004
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Location: Rapid City, SD
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Espresso: La Spaziale S1
Grinder: Mazzer Robur
Vac Pot: Yama
Drip: misc
Posted Tue Jul 12, 2011, 8:54am
Subject: Re: How Much Coffee seems to be the question.
 

The SCAA has long recommended brew ratios (coffee:water) in the 1:15 to 1:20 range. For example,
In order to qualify for the Golden Cup Award, the coffee brewing formula must fall between 3.25 and 4.25 ounces in weight (92 grams and 120 grams, respectively) of coffee per 64 fluid ounces of water (1.9 L), resulting in a coffee strength between 1.15% to 1.35% dissolved coffee flavoring material.

The SM chart suggests a brew ratio of 1:18 (1:16 for Technivorm). Your ratio (for 1.25% strength) is 1:16, which is typically my preference as well. Brew ratio tables and spreadsheets? C'mon folks, all you need is the ability to divide. 350ml liquid divided by 16 yields a coffee dose of 21.875mg.

Note: without direct measurement (refractometer, or weighing extracted grounds), you are just guessing at extraction and strength numbers.
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Netphilosopher
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Posted Tue Jul 12, 2011, 10:46am
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whd2102
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Joined: 5 Sep 2010
Posts: 87
Location: boston

Posted Tue Jul 12, 2011, 12:06pm
Subject: Re: How Much Coffee seems to be the question.
 

...seems un-necessarily complicated.

my suggestion to a newbie: start at 60 g/L, or 6 grams of coffee for every 100 mL of water used for brewing.

get a good extraction using that ratio: with good coffee it should be sweet, nuanced, well-developed.

having tasted a good extraction at that ratio, do you want something a little stronger? then, try 70 g/L, or 7 grams of coffee for every 100 mL of water used for brewing.

adjust according to taste.

voila, done.
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yakster
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yakster
Joined: 25 Feb 2009
Posts: 1,043
Location: San Jose, CA
Expertise: I live coffee

Espresso: Gaggia Factory / La Peppina...
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Vac Pot: Yama 8 + Pyrex Lox-in Rod
Drip: Brazen / Kalita / Chemex /...
Roaster: Behmor
Posted Tue Jul 12, 2011, 3:33pm
Subject: Re: How Much Coffee seems to be the question.
 

I'm most familiar with the 60 g / l (or 62.5 g / l) method and use this quite a bit, but lately I've seen a push for simpler, unitless numbers (brewing ratios) to make things easier and take the metric out of the equation to avoid frightening Americans.

For 1 liter of coffee (1000 g) and 62.5 g coffee you have a ratio of 1000 / 62.5 = 16 or a 16:1 ratio of water to coffee (by mass).  A 14:1 ratio would be pretty strong, 71.4 g of coffee per liter and a 15:1 17:1 ratio would be weaker at 58.8 g per liter.

For me, it's too late, I've got 62.5 g / liter stuck in my head, but it's not to late for the rest of you to consider brew ratios of 16:1 as a starting point.

 
-Chris

LMWDP # 272
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Netphilosopher
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Posted Sun Nov 6, 2011, 1:34pm
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