adding a spectrometer[1] might be more efficent way to monitor sugar / milk / misc 'serial' issues.<p>[1] <a href="https://johnkoetsier.com/star-trek-tricorder-for-real-new-tech-puts-a-spectrometer-in-your-phone/" rel="nofollow">https://johnkoetsier.com/star-trek-tricorder-for-real-new-te...</a>