Olive oil is an important ingredient when you’re cooking, and a vital component of salad dressings – but what happens when you open a bottle and find that the oil has turned cloudy inside? Is this a problem?
Olive oil that has gone cloudy should still be safe to use. This happens when the oil is stored in a cold environment and turns from a liquid into a solid. Sometimes, cloudiness can also be seen in unfiltered oil, because small bits of vegetable matter remain in the bottle and are visibly suspended within the liquid.
In this article, we’re going to look more closely at what causes olive oil to turn cloudy, and whether cloudy oil is generally safe to consume or not.
Why Does Olive Oil Go Cloudy?
Cloudiness in olive oil can look worrying, but in most cases, it’s nothing to be concerned about. There are two main explanations for olive oil that looks cloudy:
- The oil has got chilled and started to solidify
- The oil is unfiltered and has some vegetable matter in it
Let’s look at each of these in more detail.
The Oil Has Got Chilled
This usually happens when you put your olive oil in a cold place, such as a chilly pantry, or if you leave it on the counter in a cold kitchen. The cloudiness will form inside the oil because parts of the liquid are becoming solid.
If you’ve got a jar of coconut oil, you’ll see that it’s also white and solid – but if you heat it, it turns to a clear liquid, the way that olive oil usually looks. This is because coconut oil is a solid at higher temperatures than olive oil, so it’s usually in its solid form, which is white and opaque.
The same applies to olive oil, but it has to get colder for this to happen.
There’s nothing to worry about if your olive oil has turned cloudy; you can quickly turn it back to clear by moving it to a warm area and leaving it there. It will soon melt back into a light green or yellow liquid.
If there’s a lot of oil, you can also place the container in warm water, and the heat will spread through the oil and liquefy it.
Cloudiness may only happen to a small amount of the oil in the bottle unless you really chill it, but you’re likely to see some in any oil that’s stored below 50 degrees F.
The Oil Is Unfiltered
If you buy unfiltered olive oil, you should expect to see some cloudiness in the bottle. This is vegetable matter floating around inside the liquid, and it can reduce its transparency. It’s little bits of olive that have been left in the oil.
Many people prefer unfiltered olive oil because it often has more flavor as a result of this debris. Other people find it too strong – so taste some before buying a large quantity.
It’s worth noting that unfiltered oils can vary a lot in terms of how cloudy they become. Some are much cloudier than others, often depending on the season that the olives were harvested in.
If you don’t want to eat the cloudiness, you can run the oil through a fine strainer before using it, and most of the debris should be filtered out. However, it won’t hurt you to just use the oil as it is.
Is Cloudy Olive Oil Safe To Eat?
You can eat cloudy olive oil without any concerns; there’s nothing wrong with it at all, whether the cloudiness comes from the cold or from vegetable matter.
In the first case, the only difference is that some of it has solidified in the bottle. You don’t even have to melt it if you don’t want to. You can simply add some to a pan and use it as normal; the cooking heat will liquefy it pretty quickly.
If you’re going to use it in a salad dressing, you will probably need to melt it first. Place the container in warm water, or pour out a little olive oil and microwave it on a low setting for 10-second increments, until it liquefies.
As mentioned above, if the cloudiness is caused by debris in the bottle due to buying unfiltered oil, you can filter it yourself if you choose to. There’s no need to, however; the cloudy parts of the oil are not harmful.
It is often still worth checking your oil for signs of rancidity; you can do this by smelling it or tasting a small amount. It will smell and taste horrible if it has gone off.
Conclusion
Cloudiness in olive oil is nothing to worry about, and you can still use the oil – whether it’s cloudy because of cold storage conditions, or because of leftover olive particles. Neither of these is a sign that the oil has started to decay.
Editor’s note: The content on this website is meant to be informative, but it should not be taken as medical advice. The content of our articles is not intended for use in the diagnosis, prevention, and/or treatment of health problems. It’s always best to speak with your doctor or a certified medical professional before making any changes to your lifestyle, diet, exercise routine, or trying a new supplement.
