[Homeroast] Distilled H2O

Phil Palmintere phil.palmintere at gmail.com
Tue Jun 25 00:27:48 CDT 2013

> Thanks for that explanation.  Always wondered how it was done.  Must be
close to same as distilled H2O.  Must make great coffee too. :) Raybob 

OK, now back to tasting coffee --- I performed side-by-side comparisons of
coffee made with tap water (Lake Mead's finest -- quite hard), Costco's
bottled water, RO water, and 18 megaohm water (highly purified --
essentially no detectable dissolved solids, and as such, it is actually an
electrical insulator rather than a conductor -- manufactured on site at a
facility that operates a cyclotron to manufacture F18, an unstable
radioisotope of Florine with a 20 min. half life used in the medical

My preference was for coffee made with the costco bottled water - which the
label says is RO water with some minerals added back for taste (trace
amounts of potassium bicarbonate, sodium bicarbonate, calcium chloride and
magnesium chloride).  

Of course, since this is all subjective tasting, you may prefer something
else.  The coffee made with straight RO water, to me, is a bit flat.  It is
still good - just not as good as coffee made with a bit of mineral content.


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