Originally Posted by
jackattack
I find it's all in the grind and workflow. I have settled at 203F for the PID brew temp. I'm at 600ft elevation, so YMMV. I would get it as high as possible without exceeding the boiling point to maximize extraction for lighter roasted coffees. I think 202F is probably fine.
It sort of sounds like maybe the flow is being choked, but possibly channeling too. I have had this happen when I grind a little too fine. I can sometimes recover the shot by killing the flow for a few seconds "preinfusion" and then bringing pressure back up to 6bar to get a good flow rate without having it break down completely and channel. But ultimately I go back and adjust grind to hit 9 bar and adjust dose 19g-20g as needed for a reasonable flow rate. I also don't hold it at 9 bar for more than a few seconds after the espresso starts flowing. I immediately taper off the flow, in an attempt to emulate the pressure curve of a lever machine.
Flavor is king, so what works for me may not work for you.
There are few things more entertaining to the boy than watching me brew coffee. He will come running from anywhere in the house if he hears the grinder, especially the hand grinder. Baby love dopamine hits combined with caffeine will carry this middle aged parent through any level of sleep deprivation.