The Perfect Espresso at Home
Reproducing specialty coffee quality at home isn't impossible. It's about well-understood variables and a few good habits. The Carrera baristas will guide you.
Come learn liveAn espresso is defined by four main variables: dose (amount of coffee), grind (fineness of grinding), water temperature, and extraction time. Changing just one of these variables changes the result in the cup. Understanding their interaction means understanding espresso.
To begin: 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 according to the bean and your taste preferences.
If you have to choose between a high-end espresso machine with an entry-level grinder, or an average machine with an excellent grinder: choose the best grinder. The consistency of the grind is the most determining factor in extraction quality, much more so than the machine itself. An adjustable conical burr grinder is essential for serious progress.
The most important variable for 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 up for 15-20 minutes before the first extraction.
Coffee residues accumulate in the group head and affect taste. Weekly backflushing with a specific detergent tablet, and monthly descaling, keep the machine in optimal condition. A well-maintained machine produces much better coffee than a higher-end, poorly maintained machine.
Coffee too old (more than 6 weeks since roasting), pre-ground coffee bought in supermarkets, cold cup when serving, unfiltered hard tap water, irregular and non-perpendicular tamping: these five mistakes, committed simultaneously, can turn excellent beans into a mediocre cup. Correct them one at a time and observe the difference.
Progression 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 degraded 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 to share our expertise with serious enthusiasts. A conversation over a coffee counter is often worth more than ten articles read online.
The best espresso is still the one you get 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 City.
Come to Carrera
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