Suggestions to avoid onion-induced tears in the kitchen range from freezing them to using special goggles, but physicists at Cornell University suggest using a sharp knife and a slow cutting speed.
Onions have been a staple since ancient times and are valued for their health benefits, nutritional content, and antibacterial properties.
A specific onion compound called syn-propanethial-S-oxide is responsible for causing tears due to its release when onions are cut.
Research by Cornell physicists found that sharper blades and slower cutting speeds result in fewer droplets and particles being released, reducing the likelihood of tears while cutting onions.