The Quiet Science of a Perfect Cup of Coffee
Temperature, time and a little humility: a cheerful look at the small physics of the morning ritual.
There is no need to be solemn about coffee, but there is a surprising amount of physics hiding in the cup. Get three variables roughly right and the difference is, frankly, delightful.
Three honest variables
Water just off the boil, a sensible grind, and the patience to wait the extra thirty seconds. None of it is expensive; all of it is rewarding.
The perfect cup is mostly the one you made on purpose instead of by accident. The rest is gentle chemistry.
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