Rob Horgan bounces Willy Wonka-like around his Velo coffee roastery just outside Cork city. Here are the barrels of green beans ready to be roasted, watched over by his “young, dynamic team” who monitor the flavour profile of the beans on high-tech screens as it develops.  Nearby is the packaging station with new technology that Horgan is very proud of. It enables every bag to be traced: “We have the same date coders that Apple and Coca-Cola use, so we invested in the best kit out there.” And then there are the big gleaming roasters. “There’s a third roaster sitting on…