JW advanced spring lever

May 7, 2019 Off By Damian

Want to make coffee like John Weiss?

Shared by John, this is a 9bar lever style profile with a very short hold. 6ml/s infusion rate and 25s decline to 3 bar. With further steps to help as a safety net if you miss.

I will update with more details and graph once I’ve tried it, from what I see, the aim is to grind so the flow remains under 1.5ml/s and ends with a pressure close to 3bar