The tears from slicing onions can be so annoying. These tears are caused by releasing the gasses from the onion when it is cut and them making their way up to your eyes. Stop these gasses in their tracks just by sprinkling a bit of salt on your onion before chopping away. The salt dissolves the sulphur in the vapors. It also helps to use a sharp knife on a refrigerated onion, as less of the irritating enzymes will be released into the air. Happy chopping!
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Squirting lemon juice before cutting onions is a good way to reduce tears. This page is about using lemon juice to reduce onion tears.
Onions produce a chemical irritant known as syn-propanethial-S-oxide. This substance causes the common eye watering we experience when cutting onion. There are some ways to help keep this from happening. This is a page about cut onions wearing swimming goggles.
