Ok I admit due to time I had been a very bad boy, and not cleaned my
espresso machine as well as I should have been. (Nor have I been
using it extreamly heavy recently.)
So last night since I didn't have a single bean of roasted coffee
became coffee machines maintance and cleaning night.
Well I had a slightly distrubing result this morning when I pulled a
shot from the Giaggia Espresso. The double shot pulled in 15 seconds,
and was very much over extracted, and quite bitter.
To clean the machine, I used first started with a urnex tab, in the
portafilter, and ran it though till completely disolved. This removed
over 90% of the residue from the area under the portafilter.
I then per directions, mixed cleancafe with 4 cups of water and
disolved it in fairly warm/hot water, and ran it though the machine,
in between cycling the pump, carefully wiped off the grouphead, and
oring area with papertowels getting all sorts of grounds and oils out
of them. Flushed the stem pipe several times, and got the shmutz out
if it. After this was complete rinsed the tank fully and very well
with clean water, and filled it to the max line. Then flushed
everything on the system with an entire tank of clean water, making
sure to wipe everything down several more times, to make sure I didn't
have grounds, stuck anywhere any longer, there have been no traces of
more oil on clean paper towels, since about 3/4ths of the way thought
the cleancafe cycle.
Very happy with myself, I loaded up the portafilter this morning with
some LQ Amber which was a bit shy on it's rest time (12 hours), but I
didnt want all of my effort to be wasted, and well as I mentioned, the
shot pulled in about 15 seconds, was very bitter. (Yet still
drinkable) So only having used LQ Amber once before I roasted this to
a light Vienna, I ground it in my SM, on a setting of 3 (usually a
spot on setting for espresso) and measured the two scoops and fired
So did my cleaning get that much goo out of the system and the
preasure is that much higher? Or possible I am just out of practice
in measureing and pulling shots at the moment?