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1.
An espresso machine operator, who possesses not only exceptional skill in producing the finest quality espresso shots and drinks from the materials given (freshly ground coffee, water, espresso machine), but also possesses charisma, confidence and general aplomb with customers and co-workers in the espresso bar environment.

Compare with ninja barista.
That rockstar barista at Hines pulled me one of the best shots I've had in months, after giving me heaps of 'tude.
by Jimmy Oneschuk January 18, 2006

Words related to rockstar barista

ninja barista barista coffee espresso ninja rockstar zen