[Homeroast] distilled water
koenig.mike at gmail.com
Tue May 22 20:08:52 CDT 2012
I also find pure RO water to produce somewhat dull espresso.. Not sure of the chemistry behind this phenomenon, but it seems to be true.
I use an RO system, since we have rather hard city water, and water from the softener doesn't make the best espresso either. After the RO, I use a 4x10" housing filled with calcite and a little magnesium oxide. This puts some minerals back in the water, brings the pH back up near 7 (it's around 5 straight out of the RO), and lets the level sensor in my espresso machine function.
Makes good drinking water too... made the same way that overpriced Dasani stuff is made.
On May 16, 2012, at 6:21 PM, Doug Hoople wrote:
> +1. Distilled water is flat and dull tasting.
> Filtered tap water works for me. The chlorine in tap water definitely
> detracts from the coffee, and the filter takes care of that nicely.
> I would have thought that filtering would also take out some of the
> minerals as well, so I'm not sure that it's the minerals that make the
> difference. But I'm no expert, so I'll leave it for others to chime in.
> On Thu, May 17, 2012 at 8:13 AM, sci <scizen at gmail.com> wrote:
>> Do some cupping tests with distilled, tap, spring and filtered water. I
>> think you'll find the spring and filtered give the best results for coffee
>> and tea. The reason is because they have good mineral content that makes
>> water taste good. Tap of course usually has chlorine. Distilled, lacking
>> vital minerals, is flat and dull tasting.
>> Date: Wed, 16 May 2012 12:27:36 -0400
>> From: j3r <j at j3r.org>
>> To: "A list to discuss home coffee roasting. There are rules for this
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>> <homeroast at lists.sweetmariascoffee.com>
>> Subject: [Homeroast] distilled water
>> Message-ID: <4FB3D578.5010201 at j3r.org>
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>> At this point I use distilled water for all my brewing, but looking
>> through the SCAA cupping protocol I see "Water used for cupping should
>> be clean and odor free, but not distilled or softened." Can anyone
>> comment on why this would be so?
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