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16
4. Espresso Extraction Guide
This guide will help to improve espresso extraction, to achieve great tasting coffee, every time.
UNDER EXTRACTION OPTIMUMEXTRACTION OVEREXTRACTION
Pour*^
Extractiontoofast
Poursforunder15sec
Steady-flowextraction
Poursfor25-30sec
Extractiontooslow
Poursforover35sec
Colour
Palebrown
Crema-lightbrown
Richcaramel
Crema-darkgolden
Verydarkbrown
Crema-darkbrown
Taste Sour,acidic,watery Rich,sweet,vibrant Bitter,dry,grainy
Grind Size^^
Toocoarse
Useafinergrind
Justright
Toofine
Useacoarsergrind
Dosage
Notenoughgrinds
Usemoregrinds
OneCup=approx13g
TwoCup=approx19.5g
Toomanygrinds
Uselessgrinds
Tamp
Notenoughtampforce
Tampfirmer
Justright-firmforce
10-15Kgofforce
Toomuchtampforce
Tamplighter
* Ifusingpre-groundcoffeegrinds,useDualWallFilterBaskets.
^ Ensurecoffeebeansorpre-groundgrindsarefresh.
^^ OldcoffeebeansnomattertheGrindSettingwillhaveafastextractionandwillproduceanunderextractedtastingespresso.
The way the espresso pours will tell you
everything.
1. Extraction Time
The timer starts as soon as the extraction
process begins and allows the consumer
to be able to easily measure the extraction
time.
Extraction time is a good indicator of the
quality of the pour. The optimum time per
shot varies between types & freshness of
coffee beans. However, in general, the pour
time should be between 25-30 seconds for
both One & Two Cup shots.
2. Type of Extraction
• Optimum Extraction
Aqualitypourhasasteadyowwith
a consistency similar to that of warm
honey. The resulting crema is dark
golden.Thesweetestavours&oils
have been extracted creating a rich
tasting espresso.
• Under Extraction
The pour is fast & light in colour, the
resulting crema is thin with a creamy
light brown colour which quickly
dissipates. This occurs when too little of
theessentialoils,avours&coloursfrom
the coffee grinds have been extracted.
This creates a sour tasting espresso.
• Over Extraction
There may be no pour, or it may be
slow & drip throughout the entire pour.
The resulting crema is very dark. This
occurs when too much of the essential
oils,avours&coloursfromthecoffee
grinds have been extracted. This
creates a bitter tasting espresso.
3. Look for Colour Change
The optimum shot contains 3 elements:
Heart: At the base - starts out dark brown.
Body: Blends with the heart - becomes a
rich caramel with reddish reflections.
Crema: The layer on top of the body -
dark golden.
Crema -
Body -
Heart -
TIPS FOR PERFECT ESPRESSO EXTRACTION
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