The chemical that causes the tears is syn-propanethial-S-oxide, a corneal irritant.
White, yellow, and red onions are much more likely to make us cry than green onions. Onions make us tear up because of a reaction in the vegetable that occurs as we break into it, which causes the release of a chemical called lachrymatory factor, which then irritates our eyes.
It's not just purple onions. There is a chemical inside of onions that, when you slice an onion, are released into the air. This causes a slight chemical reaction in your eyes, causing a burning sensation. To combat the burning, your eyes tear, causing you to "cry."
The sulfur compounds in ordinary onions are more concentrated and more effective at stimulating our tear glands.
pungent, tear-inducing, strong, flavorful
No, onion juice makes your eyes tear up and cry because they don't like the juice. Do not squirt onion juice into your eyes.
shoot of the plant grows up as onions growing up
Onions and bellwethers
Garlic contains 0.1-0.36% of a volatile oilGarlic contains at least 33 sulfur compoundsBesides, sulfur compounds garlic contains 17 amino acids and their glycosides, arginine and others.
A cupfull! You have to peel and cut up the onions, put them in the cup until you get that cup full. The size of the onions is the controlling factor. There are large onions that one will make two cups and other small ons that 20 want fill a cup.
From what I learned at school in food preparation, if you cut off the bottom part of the onion (where the root stems from), it releases a strong gas like substance which burns your eyes and/or makes you tear up. I'm not 100% sure if that is accurate, but it's somewhat relevant.
Approximately 1.1 onions
The number of onions that make up one kilogram can vary significantly depending on the size of the onions. On average, small onions weigh around 100 grams each, so you might need about 10 small onions for one kilogram. Medium onions typically weigh around 150-200 grams, requiring around 5 to 7 onions per kilogram. Large onions can weigh 250 grams or more, meaning you would need about 4 or fewer to reach one kilogram.