Meet Osma, the portable barista from Silicon Valley


The cafetière goes back to 1852, the espresso machine, 1894, the multi-sided aluminium Bialetti coffee-maker, 1933, the Cona, 1947. In 2005, engineer Alan Adler invented the über-simple, £30, plastic AeroPress, which is popular with Silicon Valley tech geeks, partly because they are very fussy indeed about coffee, partly because Adler is a Silicon Valley entrepreneur himself.

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