Short piece on coffee and the artificial nose. It was an area that we examined closely and tried to understand from both linking to the real world world of the agricultural commodity called coffee, and how it related to simulated process changes like roasting. I still have my doubts that these methods can yet detect the parts-per-billion requirements that drive coffee flavor. Still all these sensor improvements are worth following, the sense of detailed machine smell will ultimately be solved. Much more in this blog on the sense of smell.