Onion

Listen, an onion is a simple thing, but people ruin it every day, so let's talk.

Why does it make you cry? The onion keeps its irritant compounds locked away in separate cells, and only when your knife breaks those cells open do they mix and release the gas that stings your eyes. Cut close to running water, or chill the onion first, and the gas dissolves or slows down before it reaches you. That's not magic; it's just physics working for you instead of against you.

How do you choose one? Forget the size. Take it in your hand — it must feel heavy and firm, no soft spots, no give under your thumb. The skin should be dry, papery, tight, almost rustling. Smell the root end: if it already smells sharp and wet before you've even cut it, put it back; it's turning.

Now, some people say white onions are always milder than yellow ones. No! Sharpness depends on the variety and how it was grown, not the color. Trust that rule, and you'll pick a fierce white onion for your salad, thinking it's gentle, and ruin the whole dish with heat nobody asked for.