Posted in NY Post Scientists use battery-testing tool to identify coffee’s ‘chemical fingerprint’ — reveals what makes it taste good May 15, 2026 University of Oregon researchers repurposed a tool called a potentiostat, typically used to test batteries, to send an electrical current through coffee. https://nypost.com/2026/05/15/lifestyle/scientists-use-battery-testing-tool-to-identify-coffees-chemical-fingerprint-reveals-what-makes-it-taste-good/