At home, how should I know whether Olive oil, I purchased, is pure enough?

What is the purity test for Olive oil?

What do you mean by "pure"? Could you please explain... – Stephie

Pure here means that the Olive oil bottle purchased from market contains only the Olive oil extracted from the fresh Olives.

Pure means - not adulterated.

  • a quick google search says that you need to put some oil ni the fridge; it if solidify, then it is olive oil; if it does not solidify, then it's a mix.
    – Max
    Jan 15, 2015 at 17:55
  • 6
    What do you mean by "pure"? Could you please explain...
    – Stephie
    Jan 15, 2015 at 17:58
  • Pure enough for what? Pasta? Exorcism? Killing lice?
    – Air
    Jan 15, 2015 at 19:06
  • @Max there are plenty of oils that can be blended into olive oil so that the mixture solidifies in the fridge, and it's a poor test anyway... cooking.stackexchange.com/questions/24689/… , ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=9582 Jan 15, 2015 at 20:26
  • @Stephie edited post. Is that clear enough now? Jan 16, 2015 at 15:42

1 Answer 1


Any real test for purity in olive oil is going to require a lab (or at least lab equipment and supplies). The cost of that testing is going to far exceed the price of your bottle of oil.

For home use, then:

  1. Buy from someone reputable. Unfortunately, even reputable folks sometimes get conned by their suppliers. (If you have a local farmer you can buy from directly, that risk can be avoided).
  2. Taste it. Unfortunately, you'll probably only be able to notice bad fakes (even experts are fooled). As a side benefit, though, you'll also get to notice poor-quality (but genuine) olive oil.

A few countries have introduced labeling for olive oil that has been tested by an approved laboratory; if yours is one of them, you could look for certified oils.

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