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Options for Brewing a single Mug that are forgiving of pour technique?
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Netphilosopher
Senior Member


Joined: 14 Jan 2011
Posts: 1,602
Location: USA
Expertise: Just starting

Posted Fri Jun 22, 2012, 8:01am
Subject: Re: Options for Brewing a single Mug that are forgiving of pour technique?
 

...
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jpender
Senior Member
jpender
Joined: 11 Jul 2011
Posts: 695
Location: California
Expertise: I like coffee

Grinder: OE LIDO
Vac Pot: S/S Moka Pot
Drip: Aeropress
Posted Fri Jun 22, 2012, 10:22am
Subject: Re: Options for Brewing a single Mug that are forgiving of pour technique?
 

Netphilosopher Said:

I would agree IF I saw "absorption" vary with extraction in practice.  For my BCM-4C, it is consistently ~1.65-1.80, whether I run a short brew with 17% extraction and medium grind, or run an overextracted brew at 7 minutes with fine grind.  So, to me it's not a "weak" function of extraction, it is a variable independent of extraction.

Posted June 22, 2012 link

You won't easily measure a dependence if the expected variation in extraction (+/-.03) is smaller than the apparently random variation in your absorption constant (+/-.08). You'd have to design an experiment specifically to see it, which makes it a non-issue.

Netphilosopher Said:

My AP absorption varies more (probably because of the smaller amount of coffee) but still hovers between 1.1 and 1.3 - over a wide range of grind sizes (espresso to french press), contact times (30 seconds to 15 minutes), and brew ratios from 5% to 25%.  The other thing I see - overnight steep tends to increase absorption, regardless of grind (to around 1.6-1.7), but again no correlation with strength using same brew ratio (since strength and brew ratio are the primary terms in any calculation of "extraction", regardless of how it's calculated).

Posted June 22, 2012 link

I would think that between 5% and 25% brew ratios in an immersion brew you'd get a large enough difference in yield (~0.1) that you might be able to see it -- if you could identify and then control for the other factors that affect absorption. Ironically, extraction might actually affect how much water is absorbed.

Netphilosopher Said:

I don't know how ExtractMoJo calculates it, but there isn't mystery here.  I thought they had a coffee brewing planning model, and the few people that ran some numbers through for me (I don't own the program) seemed to have an absorption of around 2.05 ish.  It's calculated pretty simply:  A = (Wb - Cp) / C

Posted June 22, 2012 link

If you look at the patent for Mojo it's pretty clear what they originally intended to do.


jaybar Said:

As the thread starter, how does all this relate to my original question?

Posted June 21, 2012 link

jaybar -- I'm sorry if our geek digression detracted from your thread. If you like I'll happily remove the contents of my posts. Or ask the mods to delete them if you prefer.
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jaybar
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Joined: 13 Sep 2011
Posts: 152
Location: Brooklyn
Expertise: Just starting

Posted Fri Jun 22, 2012, 11:14am
Subject: Re: Options for Brewing a single Mug that are forgiving of pour technique?
 

Thanks for the offer. Removal is not necessary. I hope there can me more answers to my original question though.

Jay
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Silas
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Joined: 17 Jun 2012
Posts: 42
Location: Springfield, Louisiana
Expertise: Just starting

Grinder: Baratza Virtuoso
Vac Pot: Cona C,  Hario Nouveau
Drip: Chemex
Posted Mon Jul 16, 2012, 8:17pm
Subject: Re: Options for Brewing a single Mug that are forgiving of pour technique?
 

Why not just use the new HARIO MINIPHON.....a ONE CUP siphon brewer?

Pretty darn expensive, though, but supposedly brews ONE great cup.
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