You're Cutting An Onion Wrong, And It's Why You're Crying Into Your Cutting Board

The tears aren't inevitable. They're a chemistry reaction you keep triggering with one specific move.

You blame the onion, but you're the one setting off the alarm. When you slice into it, you rupture cells that mix chemicals into a gas designed to make your eyes sting.

That gas drifts up, hits the moisture in your eyes, and forms a mild irritant. Your eyes flush it out with tears. You're basically getting misted by the onion's tiny defense system.

The root end is where the strongest stuff concentrates, so hacking into it first releases the worst of it. Leaving that root intact until last keeps a lot of the gas locked away.

A chilled onion and a genuinely sharp knife help even more. Cold slows the reaction, and a sharp blade crushes fewer cells, so less of that eye-watering gas ever escapes.