From a year at Costa Coffee (kind of like the U.K. equivalent of Starbucks ... Espresso Machine I’ve just tested, either. I was beginning to think it was impossible with at-home espresso machines.

A tiny Swiss company of 230 employees is responsible for making the espresso machines in Starbucks' 21,000 cafes around the world. Thermoplan AG is nestled on the shore of Lake Lucerne in the ...