Why do onions make you cry?
● When you slice through an onion, you break open several onion cells. Some
of these cells have enzymes inside of them, and when they are sliced open, the
● The enzymes then decompose some of the other substances that have escaped
from sliced cells. Some of these substances, amino acid sulfoxides, form sulfenic
acids, which then quickly rearrange themselves into a volatile gas.
● The gas reaches your eyes and reacts with the water that keeps them moist. This
changes the chemical’s form again, producing, among other things, a mild
sulfuric acid, which irritates the eyes. The nerve endings in your eyes are very
sensitive and so they pick up on this irritation.
● Peeling the onion and then chilling it in the refrigerator before you slice it will
minimize the release of gas.
● Another easy solution is to cut the onion under water or run the tap over it as you