Prufrock brewing temperature

Recorded at Prufrock @ Present. home of the World Barista Champion 2009
I thought it would be interesting to see the temperatures the lever machine produces while extracting coffee. I feel the first temperature gives a better representation than the 2nd as I really didn't give the machine any time between the two. I was surprised at the results.
Hopefully I can get my hands on a Scace 2 so I can record brew pressures. I have been told the machine starts extracting at 14bars and decreases throughout the extraction.

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Tags:

• espresso
• extraction
• temps
• temperatures
• coffee
• barista
• champion
• london
• shoreditch
• east
• cappuccino
• water
• prufrock
• present

[SammyBoi992]

i dunno if im right but 95c is the optimal right?

[DavidBarista]

@SammyBoi992 Well ...sort of. Depending on the coffee I would say anywhere from 92-95C. The lever machine treats coffee very differently than any other machine. The water flow rate and pressure are so much different than a standard espresso machine and they also change throughout the brewing process which makes the temp less of a factor than on a semi-auto where both flow rate and pressure is constant. I am still trying to learn more about this machine, it makes some fantastic coffee though

[AustinBarista]

So the first shot peaked around 93.5, and the second at 96. Is that due to a flush routine difference, or is the group hotter the second time around and less able to pull the temperature down?

What about in a high volume use, does it become more or less temp stable. I mean, if you keep using the same group, will you see hotter and hotter temps with a smaller decline in the temp profile? Or am I completely misreading this?

[hazymat]

Nice filming :)