How to dial in your espresso
Espresso has three levers — grind, dose, and output. Work through them in that order. Grind is almost always the first thing to adjust.
Common espresso problems and fixes
Tastes sour or sharp
Under-extracted. Grind finer to slow the flow and increase extraction. Even a small grind adjustment makes a big difference with espresso.
Tastes bitter or harsh
Over-extracted. Grind coarser to speed up the shot and reduce extraction. If your shot time is already short, try pulling a longer output (more espresso from the same dose).
Too strong or intense
Increase your output — pull more espresso from the same dose. A standard ratio is 1:2 (e.g. 18g in, 36g out). Going to 1:2.5 will reduce intensity without changing grind.
Too weak or watery
Decrease your output — pull less espresso from the same dose. Or try a slightly finer grind to increase body and intensity.
Dry or astringent
A clear over-extraction signal. Grind coarser immediately — dry and astringent espresso means the shot has gone too far. This won't improve by adjusting output.
The espresso dial-in order
Always fix grind first — it has the biggest impact on taste. Once you're happy with the flavour balance, adjust output to dial in strength. Dose (how much coffee you put in) is the last lever to touch.
A good starting point: 18g in, 36g out, 25–30 second shot time. Taste and adjust one thing at a time from there.
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