Say What?: Onions make me Cry

 
Ever been that person who starts cutting an onion when cooking something and you just can't hold back the tears? Have you ever wondered why? If its just if you're allergic or if you get sad at the idea of cutting a vegetable? Well, I have found an answer.

When you cut into an onion, you rupture its cells, releasing enzymes that produce a gas called propanethial sulfoxide that when it reaches your eyes creates a mild sulfuric acid which hurts and causes your eyes to water. Which makes you look like you're feeling sad for a vegetable. Whimp.

But there is an easy fix! If you keep the onions in the fridge or chill them in the freezer temporarily before cutting them, it slows the release of the enzymes and therefore not causing you to weep. Additionally there are more enzymes near the bottom of the onion so cut that last. Happy cooking!

(source)