Espresso Extraction

Espresso extraction time is the most over-cited and most misunderstood number in home barista practice. Everyone repeats “25–30 seconds” like a magic formula, and yet half of bad home shots time perfectly in that window. The clock is a diagnostic tool — it tells you what’s happening to the puck under pressure — not a recipe step. This guide covers what shot time actually measures, where the clock should start, why pre-infusion changes everything, how to spot channeling from timing patterns alone, and the roast-by-roast windows that the standard 25–32 second answer never mentions. ...

Espresso ratio is the single most important concept for making consistently good espresso. Once you understand it, you stop guessing and start dialing in with intention. This guide explains what the ratio is, what numbers to use, how to measure it, and how to adjust it when your shots are off. What Is Espresso Ratio? Espresso ratio is the relationship between: Dose — the amount of dry coffee you put in the portafilter (in grams) Yield — the amount of liquid espresso you produce (in grams) Written as dose:yield, or more precisely as a ratio like 1:2. ...