Puck prep: WDT and distribution
What happens between the grinder and the group head decides the shot. Clumps, distribution tools, the WDT needle, and which steps are worth the time.
Tamping
Level beats hard, and the pressure debate is settled. What a tamp is actually for.
Articles
Tamping: level matters, pressure barely does
Where the 30 lb rule came from, why a level puck beats a hard one, and what to do before the tamper ever touches the coffee.