When you heat oil, you release aldehydes, a particular kind of organic compound. Many aldehydes have fragrances, which can range from fishy to citrusy to smelling exactly like a banana! You can see a list of aldehydes present in oils and their smells here:
Oils breakdown and develop smells particularly when exposed to direct sunlight, or when they age and become rancid.
Amanda is a co-founder of Food52.
Here's some more reading on this matter -- a paper from The Journal of American Oil Chemists' Society: http://www.springerlink...
Please enter a valid email address.
Well played. You deserve a cookie.
You’re making our month the best ever—thanks, friend!
Free Shipping This Weekend
Who Will Win Our Bake Off?
A Genius No-Cook French Tomato Sauce Recipe
How—and Why—Did Fruitcake Become a Slur?
French Food, Unbuttoned
prevented successful signup:
We'll never post anything without your permission.
prevented successful login:
Get the recipes and features that have us talking, plus first dibs on events and limited-batch products.
(Oh, and $10 off your order of $50 or more in the Food52 Shop, too.)