Brady, I did a bit of temperature testing earlier this morning. I don't have any high tech devices to measure temperature and simply use a very accurate digital thermometer/styrofoam cup test, which is good enough for me. The machine I own/use daily is a 2 group NS Aurelia. Here goes...
Ran 10 oz. of water through the group (into a 12 oz. cup), water started out at 199 and remained steady at 200 once the cup had the 10 oz. in it.
Then dumped that and waited approximately 30 seconds and ran 2 oz. into the cup, temp was 198.
Repeated the same thing and the temp was 196.
One last time and got the same temp, 196.
Did the same exact procedure on the 2nd group and had almost identical readings.
I was actually a bit surprised that the temp remained that stable with that much water taken out in a short period of time, but I have always been very pleased with the Aurelia, having used this machine for close to 8 months now.
What I don't understand and it wasn't yet addressed (I don't think anyway) is why don't you just give this guy like 12 shots of espresso? That would make more sense to me for the taste and for the machine.
Though I've never been to "Europe." Tee hee.
Since he is the only one to ask for that concoction I let him name it.