Hot vs Cold Portafilter/Grouphead

Beginner and pro baristas share tips and tricks for making espresso.
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#1: Post by CharlieM1725 »

How big of a difference does it make to extraction times?

People say run 2-3 blind shots through a portafilter but I worry about just going through my water tank so quickly on my machine.


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#2: Post by emradguy »

The bigger 'concern' is affect on extraction temperature. A hot pf will not be such a heat sink and give you better maintenance of desired temperature throughout the shot.
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BaristaBoy E61
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#3: Post by BaristaBoy E61 »

Our portafilter is always in the group when the machine is 'ON' and sits in the group after prep while a cup full of freshly drawn hot water is also heating up before the shot is pulled.

My preference is for max temperature stability, group, portafilter and cup.
"You didn't buy an Espresso Machine - You bought a Chemistry Set!"