Machines & Gear
Gear, machines and what actually makes a difference.
Coffee bean storage: the airtight canister came last of four
Nine weeks of measurements put the sealed tin last of four ways to keep beans once the bag has been opened.
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28 articles
Espresso machine pressure: 60 shots found the ceiling at 5 bar
October 16, 2026Sixty measured shots put the flow ceiling at about 5 bar, and the coffee bed itself is ...
Plant-based milk foams like dairy, but only under a steam wand
October 12, 2026Under a steam wand, 10 plant drinks foamed in the same range as dairy; whisked cold, on...
Coffee machine bacteria: 35 to 67 genera in a single drip tray
October 5, 2026Ten capsule machines, one used coffee tray each, and a bacterial census that ran from 3...
The espresso grind setting where finer stopped extracting more
October 1, 2026Grinding finer raised espresso extraction right up to a point, then the yield fell back...
An espresso puck is still mostly dry one second into the shot
September 27, 2026A rotating x-ray scanner filmed the stage of an espresso shot nobody can see, and the b...
Brew basket shape changes drip coffee more than the grind does
September 23, 2026A UC Davis panel could tell a cone basket from a flat one by taste, but could not tell ...
Steam wand pressure shapes milk foam more than technique does
September 19, 2026Dairy research puts the best foam between 50 °C and 60 °C, and the nozzle decides what ...
Gooseneck kettle: pour height does more than the temperature dial
September 15, 2026The dial on a pour over kettle is the feature people pay for, and the height they pour ...
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