Yukio Sato

This matches my experience exactly. I keep a jug of remineralised water just for coffee and my partner thinks I’ve lost it. The cup says otherwise.

Dialled in a new espresso this morning: 18g in, 39g out, 27s. The trick was grinding two clicks finer than felt right, then walking away instead of chasing channeling by tamping harder.

Repeatability beats heroics. A shot you can pull the same way every morning is worth more than a perfect one you got once and can’t explain. Write down the numbers.