coffee extraction
TRANSCRIPT
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C FFEE
EXTRACTI N
CristinaSánchez
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WHAT AM I GOING TO TALK ABOUT?
1 2BASICCONCEPTS
3PERCOLATION. THE ESPRESSO MACHINE
4WHAT HAVE WE LEARNT?
INTRODUCTION
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INTRODUCTION
ESPRESSO COFFEE
oCapacity just
over 50 mL
oMore than
50.000.000 cups/day
are consumed in the
world
oIt contains less
caffeine than the
more dilute coffees
do
oProduct devoid of
calories
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Basic concepts
Percolation
RAFFINATE
EXTRACT
SOLVENT
WATER COFFEESOLIDS (COFFEE
GROUNDS)
EXTRACTION
SOLID
COFFEE BEANS
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Basic concepts
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PERCOLATION. The espresso machine
PARAMETERSoWater temperature: 90
ºC
oInlet pressure: 9 atm
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PERCOLATION. THE ESPRESSO
MACHINE
PARAMETERSoPercolation time: 30
s
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WHAT HAVE WE LEARNT?
It is not that simple to
make a good espresso
Percolation is the essential
stage
Extraction parameters are
crucial
Functioning of an espresso
machine
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QUESTIONS