When you chop onions, do they make you cry? If so, you are not alone. But, here is a quick tip from Chef Carol at Rain City Cooking School.

When we cut into an onion, the sulfur compounds inside the onion cells are exposed to oxygen, combining with it to form the same stuff that we find in smog that makes our eyes sting and burn. Only, now it's a lot closer to our eyes and much more concentrated.

You've probably heard a lot of remedies, but none of them makes much sense when you know the science behind the tears.

If cutting onions makes your eyes tear up, pour a tablespoon of vinegar, distilled white vinegar is just fine, onto your cutting board. The acid in the vinegar will stop the chemical reaction of the sulfur in the onion with the oxygen in the air. Voila! NO MORE TEARS!