Dave: this tree diagram could somehow be made a little more symmetrical and
aesthetically appealing, I’m sure
EXTRACTION:
\
SOLUBLES
INSOLUBLES
/
\
I
I
SOLIDS
GASES
SOLIDS
OILS
I
I
\
/
TASTE
AROMA
BREW COLLOIDS
I
I
BODY, TASTE, & AROMA
/
Ditto for the table below:
EFFECT:
POSSIBLE SIGNIFICANCE:
Extra grounds absorb more heat from
brewing water, causing lower average
extraction temperature.
Alters flavor profile, can increase sour
flavors.
Requires a coarser grind to maintain a
given flow rate.
Causes more colloids and larger molecules
to be trapped in the cellular structure,
preventing their extraction. Lowers
solubles yield. Increases fines migration.
Numerous other effects.
May swell enough to press the dispersion
screen.
Contentious. Opposed by Petracco (2005)
but favored by some top baristi. Seems to
be detrimental to extraction with some but
not all machines. Certainly detrimental to
long-term performance, integrity, and
cleanliness of dispersion screen. Effects
may vary based on group head and screen
designs.
Results in lower solubles yield for a given
flow rate and extraction time.
Shifts flavor profile toward more acidic and
less sweet and caramel.
Another gorgeous table:
Action
Make grind finer
Effect on Yield
Increase
Effect on Brew Strength
Increase
Decrease brewing ratio
Increase
Decrease
Decrease brewing ratio and
make grind finer
Increase
None, if grind is adjusted
appropriately
Make grind coarser
Decrease
Decrease
Increase brewing ratio
Decrease
Increase
Increase brewing ratio and
make grind coarser
Decrease
None, if grind is adjusted
appropriately
Okay, this one actually looks good already, but perhaps it could be tweaked to have a
similar aesthetic style as other ones you’re doing: