Category: Technique
Dialing in, dose and yield, distribution, extraction troubleshooting. The skills that close most of the gap before any upgrade does.
Espresso Dial-In Chart: What to Adjust First
Learning to dial in espresso means changing one variable at a time. This chart matches what’s happening in the cup, or the…
Espresso Crema: What It Actually Shows You (and What It Doesn’t)
Crema looks like a mark of quality on top of an espresso shot, but it’s mostly CO2 gas and emulsified oil escaping…
Wet Espresso Puck After Extraction: What It Means
A wet espresso puck after extraction is usually just physics: dose, grind, and machine design at work, not a flawed shot. Here’s…
Espresso Channeling: Why It Happens and How to Reduce It
Espresso channeling happens when water cuts a low-resistance path through the coffee puck instead of soaking it evenly. Here’s the mechanism behind…
Under-Extraction vs. Over-Extraction: What’s Actually Happening in the Cup
Under-extraction and over-extraction aren’t the same as weak or strong coffee. Here’s the mechanism behind each, grounded in extraction theory, not lab…
Espresso Tastes Sour, Bitter, or Burnt? A Diagnosis Table
Espresso tastes sour, bitter, or burnt for different reasons. This diagnosis table matches each symptom to its likely cause and the adjustment…
