TWINKLE FOR YOUR TABLE. SHOP NOW »
All questions

Just fried donuts in canola oil and it smelled like I was frying fish. I've read this happens sometimes to canola at high heat. Anyone know w

asked by Honeybee over 4 years ago
2 answers 3593 views
84e1393f 0d16 4291 80cf 2c42b5acf188  noz photo
added over 4 years ago

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:

http://uqu.edu.sa/files2...

Oils breakdown and develop smells particularly when exposed to direct sunlight, or when they age and become rancid.

397bc6d3 46e8 4d02 8a39 ce4a087eb481  2015 0609 amanda portrait 135
Amanda Hesser

Amanda is a co-founder of Food52.

added over 4 years ago

Here's some more reading on this matter -- a paper from The Journal of American Oil Chemists' Society: http://www.springerlink...