Another question for the group, and thanks for all your wisdom. OK, so I have a plumbed in Cellini and have been reading about proper extraction temperature. I purchased a Taylor instant read thermometer and waited about an hour to read the water coming out of the group head. Without doing a preflush it read approx. 188-191F. Boiler was 1 to 1.2 bars. I really don't know how accurate this reading is but wanted to get your take on it and if i should have any concerns. Shots are very hot when they come out and taste good. (My Technique needs to improve and get more consistent). Any thoughts?

About 10°F too hot.

Search for, then Buy Eric's thermometer adapter

Really, so without pre flushing for 5 -10 seconds proper temp should be around 178-180F? Do you think I need an adapter or would a flush do the trick??

So how does the adapter work?? Just reads the grouphead temp?? I can't find were to buy Eric's Thermometer adapter?? Help!

You will need to flush with a boiler @ about 1bar.

If you run the group into a styrofoam cup after flushing the water should be about 180° to 184°F.
Brew water temperature will be about 200°F.

Eric's adapter makes flushing easy.

Also see FAQ's Heat Exchanger Operation