Interesting 40 minute youtube video with the perfectionist David Schomer, on how he started Espresso Vivace in Seattle. I remember reading many years ago how he didn't sleep the night before trialing a machine which would regulate temperature to within half a degree...and uses aquarium tanks instead of mains water to regulate pressure.
https://m.youtube.com/watch?v=BzVgpmu6clQ&t=1333s
https://m.youtube.com/watch?v=BzVgpmu6clQ&t=1333s

Comment