Onions are one of those tricky vegetables. I’ve had friends (usually little kiddos) that can’t pronounce it correctly. The most common for a while was yonion. :). And it makes a lot of people cry. I can’t say everyone because I don’t cry cutting up onions, but I run people out of the house cutting up onions. My favorite thing to do IS cut up onions. So I always volunteer to cut onion for people. ALWAYS.
So why do Onions make you cry?
Onions produce the chemical irritant known as syn-propanethial-S-oxide. The synthase enzyme converts the amino acid sulfoxides of the onion into sulfenic acid. It stimulates the eyes’ lachrymal glands so they release tears.
Do some Onions make you cry more than others?
It takes a lot of precise chemical reactions to produce tears. White, yellow, and red onions all have a higher concentration of the onion enzyme necessary to create syn-propanethial-S-oxide while sweet onions, green onions, and scallions have fewer of the necessary enzymes.