Scientific Study Debunks Onion Myths: Sharpness, Not Temperature, is Key to Tear-Free Chopping

Based on these irrefutable observations, the true and "actual" solution to cutting onions without tears is remarkably simple and elegant: maintain an extremely sharp knife and execute the cut with gentle, deliberate movements. A finely honed blade slices through the onion's cellular structure with minimal friction and maximum precision, resulting in less widespread cellular damage and, consequently, a dramatically reduced release of the alliinase enzyme and the resulting Propanethial S-oxide gas. Furthermore, the slow, controlled motion prevents the forceful agitation of the onion's surface, which would otherwise propel the noxious mist into the air and directly toward the vulnerable eye tissue, turning a violent rupture into a clean, smooth separation.