30
Judging the result.
If you have followed the instructions, the result is a perfect
espresso. You can judge this by the following criteria:
The color of the crema shows the caramelized natural sugars
of the espresso bean. Ideally, the crema should be of a hazel
color with a tiger striped pattern. The crema should be three
to four millimeters thick. It should not include any big bubbles
and last a minimum of three minutes without breaking up or
decomposing.
After the extraction of the shot(s), the aroma should be inten-
se but pleasant and slightly sweet.
The taste of the perfect espresso should be perfectly balanc-
ed between sweet and bitter components it has a nice consi-
stency and is not too thick. The following chart will help you to
judge the resulting espresso and help you to improve it if the
outcome has not been to your satisfaction.
01
03
02
01 Perfect crema
02 Light and thin crema
03 Dark brown crema with
black hole in the middle
31
Inadequately brewed espresso grind
Appearance: Light, watery, coarse bubbled froth, thin crema and quickly
disappearing aroma.
Reason Solution
Espresso too coarse Grind the espresso finer
Espresso amount too little Increase the amount of espresso ground
Espresso tamped either too
little or not at all
Tamp the espresso harder
Water temperature below 190.4 °F Reset Boiler
The espresso flows out too quickly
(extraction time below 20 seconds)
Check the temperature and the pressure;
if o.k., grind the espresso finer. Increase
the espresso amount and/or tamp harder.
Reason Solution
Espresso ground too fine Espresso needs to be ground more coarsely
Espresso amount above 0.35 oz Set the amount between 0.26 – 0.32 oz
Espresso tamped too hard Espresso needs to be tamped more softly
Water temperature above 197.6 °F Water pressure needs to be reset by
Espresso only drips out of the spout
(extraction time over 30 seconds)
Check temperature and pressure; if o. k.,
grind the espresso coarser, reduce amount
and/or tamp slightly softer
Overbrewed espresso grind
Appearance: Foam is dark or black, with a white spot or a black hole in
the middle, very thin, which dissolves towards the edge of the cup. Taste
is bitter without any aroma.
User Manual • 08 Espresso
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