Like I said, 9 ± 1 bar extraction pressure, which after all includes your 9.5 to 10 bar, is perfectly alright. Don't get confused about that pressure gauge; a lot of machines don't even have a manometer for brewing pressure. And as the 10th Law of the House of God states: If you don't take a temperature, you can't find a fever.
*** "This drink of the Satan is so delicious that it would be a shame to leave it to the infidels." (Pope Clement VIII on coffee, when he was urged to ban the beverage)
Then Wayne, I'll consider myself edjumecated and realize all them folk who dial their heat cycle to produce a given pressure in the brew boiler are actually achieving a quality of temperature control they can measure in the cup. Thank you very much! Nuance - Brilliant! When I find my equipment no longer serves my needs and desires I'll consider the idea as a new basis for discrimination of the better machine of the day.
;D Your welcome! Most serious espresso members, once they are out of starter equipment are pretty happy with their choices and tend to stay with the same gear for quite a while. By the time you feel the need to "move on" we may be reading temp by a scale that has not been invented yet! YMMV!
In real life, my name is Wayne P. Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!
Feed the newbs, starve the trolls and above all enjoy what you drink!
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