One of the easiest vegetables to cut is the onion. The cellular structure seems designed for dicing and lends itself to fast and relatively easy dicing when you know what you’re doing. This classical technique not only makes quick work of cutting the onion but is designed to drastically reduce the exposure of the tear-inducing oils to the air thus making the process far more painless for those prone to onion tears.
And this is how the professionals cut onions! It is fast and highly effective. I have been cutting onions for so many years that my tear ducts just don’t care anymore. When I was very new to cooking, and if I get an especially potent one even today, I was prone to crying while cutting. A helpful remedy to this it to light a wooden matchstick, the sulfurous odor will fill the room which helps to counter the onion, I then hold the matchstick with the burnt end out just under my nose while I cut the onions. No tears! Onions are delicious.