The Perfect Espresso At Home
Reproducing specialty coffee quality at home is not impossible. It’s a matter of well-understood variables and a few good habits. The baristas at Carrera guide you.
Come learn liveAn espresso is defined by four main variables: dose (amount of coffee), grind size (fineness of grinding), water temperature, and extraction time. Changing any one of these variables changes the result in the cup. Understanding their interaction is understanding espresso.
To start: 18g of ground coffee for 36-40ml of espresso extracted in 25-30 seconds, at a water temperature of 92-94°C. These are starting points, not absolute rules. Adjust from there depending on the bean and your taste preferences.
If you have to choose between a high-end espresso machine with an entry-level grinder, or a mid-range machine with an excellent grinder: choose the best grinder. Grind consistency is the most decisive factor in extraction quality, far more than the machine itself. An adjustable conical burr grinder is essential for serious progress.
The most important variable of a home espresso machine is temperature stability. A machine that fluctuates in temperature between two cups will produce inconsistent extractions. The best home machines use double boilers or thermoblock systems with precise regulation. Always let the machine heat for 15-20 minutes before the first extraction.
Coffee residues build up in the group and affect the taste. A weekly backflush with a specific detergent tablet and a monthly descaling keep the machine in optimal condition. A well-maintained machine produces much better coffee than a higher-end machine that is poorly maintained.
Coffee too old (more than 6 weeks since roasting), pre-ground coffee bought at the supermarket, cold cup at service, unfiltered hard tap water, irregular and non-perpendicular tamping: these five errors, made simultaneously, can turn an excellent bean into a mediocre cup. Correct one at a time and observe the difference.
Progressing in home espresso follows a simple rule: change only one variable at a time. If you adjust the grind and the dose simultaneously, you won’t know which of the two changes improved or worsened the result. One variable, one cup, one observation.
If you are passionate about home espresso, come to Carrera Café and talk to our barista. We love sharing our expertise with serious enthusiasts. A conversation over a coffee counter often means more than ten articles read online.
The best espresso is still the one you pick up at Carrera
Even with the best home setup, some days you prefer to entrust your cup to an expert barista. Carrera Café awaits you in Petit-Champlain, Quebec.
Come to Carrera
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