Sharkboy,
I left my Diadema the way FC set it - 1.1-1.2 on the gauge and ran the old -
Im trying to become less empirical about the whole coffee making process and atm am just watching and listening for the water to stop spluttering and then pull the shot.

Interesting to hear that you are flushing around 240ml....I flush into 2 shot glasses which is a round 180ml and then I fill the basket, tamp and set my timer before flushing once again. The portafilter goes in and we all know the rest from here.
Seems as though I am pretty close to the mark temp wise (without verifying with a Thermometer) but I think my problem is that after pouring the first shots, I then have a break of around 5 mins whilst I do milk etc and come time to brew again, I am using the same technique (2 glass flush..)
I understand the purpose of flushing is to reduce the temperature of water, but perhaps I am flushing too much and that may explain why my second round of shots pour differently (Sometimes too quick and others too slow) compared to the initial run. ???
Perhaps I need to invest in a digital thermometer.....
Ciao`
James

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