Machines & Gear
Gear, machines and what actually makes a difference.
Freezing coffee beans gives a narrower grind, not a finer one
A 2016 grinding study found that the freezer changes the spread of a coffee grind far more than it changes its size.
Read article →More in Machines & Gear
18 articles
Water hardness sets the descaling clock on your coffee machine
August 31, 2026German law calls it soft, the USGS calls it hard, and the machine on the counter only c...
Moka pot extraction starts at 68.7 °C, not at boiling point
August 27, 2026Ten thermocouples on a Bialetti show the first coffee leaving the tank at 68.7 °C, and ...
Espresso pressure: why 9 bar is a habit, not a law of physics
August 23, 2026Nine bar is what a lever spring happened to deliver in the 1940s, and the coffee bed st...
Automatic shut off: why your filter coffee machine goes dark
August 19, 2026A filter coffee machine that goes dark 40 minutes after brewing is following European l...
Conical burrs or flat burrs: what actually changes in the cup
August 15, 2026The conical versus flat burr argument is really an argument about fines, and a 2024 stu...
Coffee grinder static: what one drop of water actually changes
August 11, 2026Grinding charges coffee particles to as much as 120 nC per gram, and a study in Matter ...
Why your drip coffee machine never reaches brewing temperature
August 4, 2026There is a written specification for what a home brewer has to do, and most kitchen mac...
Paper coffee filters, metal or cloth: what each one changes
July 29, 2026The cheapest part of the setup is the one that decides what reaches the cup.
Drink the coffee behind the writing
100% Arabica from Mexico, freshly roasted and delivered to your door.
Discover our coffee