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How do you know if avocado oil went rancid?


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7 replies to this topic

#1 HowardLi

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Posted 13 May 2012 - 12:40 PM

I have a bottle I just bought, not yet past "best by" date, but it doesn't taste good. Should I return it or live with it?

#2 Chris Hennes

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Posted 13 May 2012 - 12:49 PM

Rancidity is typically a pretty easy smell to recognize, but it's hard to describe if you've never experienced it. Have you used this avocado oil before? Do you know what it's supposed to smell like? If it was exposed to high temperatures during shipping or storage, or was just mishandled, etc. it's certainly possible for it to develop some rancidity before its (somewhat arbitrary) "best by" date has passed.

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#3 Lisa Shock

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Posted 13 May 2012 - 12:59 PM

Actually, oils can go rancid before humans can taste or smell it. (I add a little BHT to oil as soon as I bring it home and store it in the fridge. And, I buy small quantitites.) If it smells/tastes bad, then it probably is bad, whether rancid or contaminated. There have been some recent scandals involving oils being sold as one type, but actually being another type, some with chemical additives. I'd return it. If you buy more, avoid that lot number.

#4 Chris Hennes

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Posted 13 May 2012 - 01:07 PM

You might also want to read through this topic on rancidity: it's a specific type of spoilage that takes place over time. Oxidation begins the moment the oil is produced: at some point it crosses a threshold at which it can be tasted, and we call that "rancidity." We've also got this topic on Detecting Rancidity in Oil.

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#5 weinoo

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Posted 13 May 2012 - 01:24 PM

I think if you're wondering whether it's rancid, it's rancid.
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#6 Chris Hennes

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Posted 13 May 2012 - 01:35 PM

Well, it might just be nasty. I've had some olive oils that weren't rancid: they were just gross.

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#7 dcarch

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Posted 13 May 2012 - 02:40 PM

It tastes like WD-40.

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#8 GlorifiedRice

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Posted 14 May 2012 - 04:16 AM

Consumption of rancid oils can prevent the absorbtion of or leaching out of Vitamin K from the body, Vitamin K is vital to blood clotting.
Just like rancid grains smell of crayons, rancid oils can also have a crayony odor.
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