A Cry for Help?
After a TikTok user complained that she weeps “a lot a lot” when chopping onions, an emergency medicine physician shared a tissue-free slicing strategy that he swears is a cut above the rest.
The Science Behind Onion Tears
Dicing an onion causes the release of the volatile gas propanethial S-oxide, which produces tears. The chemical culprit is propanethial S-oxide — it’s a natural defense mechanism onions use to protect themselves from being eaten by animals.
Dr. Joe Whittington’s Solution
California-based doc Dr. Joe Whittington recommends placing a wet paper towel near the onion to act as a “magnet” to absorb the propanethial S-oxide as you slice. The moisture attracts the sulfur compounds, helping to prevent irritation, so you’re less likely to shed tears while chopping.
Other Tips to Prevent Onion Tears
- Freezing the onion beforehand
- Keeping the root intact
- Placing a fan next to the cutting board
- Using a super-sharp knife as you cut fast
- Donning protective eyewear
- Trying Sunions, naturally bred “tearless” onions
Mixed Results
This trick has been tested before — with mixed results. A Kitchn writer reported that nothing happened when they tried the method, while Mashed notes that moving the paper towel “even an inch away” from the onion may make the cloth useless.
Conclusion
While there is no foolproof way to completely eliminate onion tears, Dr. Whittington’s method may be a useful hack for those who struggle with tear-inducing onions. Whether you’re a seasoned chef or a novice cook, it’s worth trying out these tips to see what works best for you.
FAQs
Q: Why do onions make me cry?
A: Onions release a gas called propanethial S-oxide when chopped, which irritates your eyes and causes tears.
Q: What is the best way to prevent onion tears?
A: Dr. Joe Whittington recommends placing a wet paper towel near the onion to absorb the propanethial S-oxide as you slice.
Q: Are there any other ways to prevent onion tears?
A: Yes, other methods include freezing the onion beforehand, keeping the root intact, placing a fan next to the cutting board, using a super-sharp knife as you cut fast, and donning protective eyewear.
Q: Can I try Sunions, naturally bred “tearless” onions?
A: Yes, Sunions are a type of onion that is naturally bred to produce fewer tears.
