The 2026 Home Espresso Shift: from Smart Kitchen Appliances to Simpler Brewing
By Alexander Ross
Q1: Why does my espresso taste sour even though the shot took 28 seconds?
Sourness indicates under-extraction. Increase your brew temperature by 1°C, 2°C, extend your target yield by 2, 4 grams (shifting from a 1:2 to a 1:2.2 ratio), or adjust your grind one step finer while checking for channeling.
Q2: Do I need to clean the machine after every brewing session?
Run a brief two-second water flush through the group head immediately after removing the portafilter to clear loose grounds. Wipe the steam wand with a dedicated damp cloth and purge it for one second immediately after texturing milk to prevent dried residue inside the tip.
Q3: Does tamping pressure change the flow rate of the shot?
Beyond 20 pounds of force, coffee grounds reach maximum mechanical compression. Flow rate is governed almost entirely by your grinder's particle size distribution and dose mass, not by pressing harder on the tamper.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
