Can Cooking Oil Be Reused

Can Cooking Oil Be Reused? 

Foods made with oil can be greasy, and the whole process may not be that easy, as they can hurt you with splashes, and can even ruin your clothes, but God, how they are worth doing. Just think of those well-made french fries, or those tasty nuggets you’ve never felt so crispy, but what do you do with the oil that’s left? Reuse? Throw away? Wait, can you actually reuse oil after you have fried something in it? Yes, you can, and if you want to know how to do this, you just need to stick around and read this article!

Instead of throwing your used oil in the sink drain, which in doing so will not only clog it, but it can also contaminate liters and liters of water, you can turn it into homemade soap – a great way to help the environment! You can also reuse to fry more things later, or even recycle it in NGOs and companies that collect it.

Although some health-related magazines or articles say that reusing the same oil is often bad for your health, here are some tips you can follow, so that when you reuse it, it is not that harmful. I’ll be also teaching you how to transform “something old” into “something new”, which will be very beneficial for the environment.

The first tip is simple – better to fry for a longer period of time, than to do countless small times, and do not forget that in the moments when you’re not frying, the oil must be covered, without getting in contact with the air. Another big tip – you should never mix old oil with new oil.

Reuse Already Fried Oil

Let’s go to the basics! To clean and then to store your used oil, whether to reuse it later or recycle it in NGOs, first you must wait for the oil to cool down. Then, after reaching a temperature that is already good to handle, use a utensil and remove all large ingredients that have remained.

After that, place a very fine sieve or cotton cloth (it will be even better if you can use both) over the container where you plan to store your oil and strain it. Attention, be very careful in this part, there may still be some debris left on the bottom of the fryer, and you need to dispose of them separately.

In the next step, we will need you to separate and catalog your oils in the correct way, as they will take on the taste of the food you cooked in it. That’s why separating them well will avoid these overlapping bad flavors. Lastly, store them in a cool, dry place – the refrigerator is good enough.

Avoid reusing the same oil many times, because each time you reuse it, it becomes more destabilized, until it reaches the point of decomposition, having its very distinct appearance, with a sticky, thick consistency and a darker color. Now, which other ways can you reuse your oil?

Homemade Soap

It will not be a Bath & Body Works soap, but it will be something you made yourself, in addition to helping the environment in which we live. So, if you want to know how to make your own homemade soap, just follow this simple recipe below.

Materials you will need:

  • 1 liter of water;
  • 2 liters of used and strained cooking oil – remove excess food residues;
  • 500g of caustic soda;
  • liquid soap – to make the final material softer (as much as you want);
  • washing powder – to make foam (as much as you want);
  • a piece of wood or a long wooden spoon to stir;
  • a plastic bucket;
  • a rectangular baking dish;
  • a garbage bag to line the pan.

NOTE: Be very careful with the use of caustic soda! Remember to use gloves, mask, apron, and closed shoes, and you will avoid splashing. Also, do not use any metal utensils or equipment, and always do it in an airy environment.

Going back to our recipe, now let’s prepare:

Start by heating the water, but remove it before it boils. Then, add the caustic soda to the plastic bucket, while slowly adding the water, and stirring well to dissolve. Add the oil and, immediately after that, mix in the washing powder and the liquid soap, stirring for another 40 minutes, or until the dough thickens. Now, line a baking sheet with a garbage bag, and pour the dough into it. Lastly, let it dry for two days in the sun to harden, and cut the soap, but only use it after 10 days.


The last option that we found to be as good as the previous ones, would be to recycle the used oil destined to NGOs, companies, or entities that collect and process it. Today, there are many collection points, but before sending it, it is good to remember that you should use a container with a lid, for example, a pet bottle.

Do not also forget that you must wait for the oil to cool down before adding it to the pet bottle.

Final Thoughts

After this article, I hope that you have noticed the countless ways to reuse your used oil. Hopefully you’ll be able to fry your crispier and tastier fatty foods, so far, countless times, without having to break the bank. You can also get yourself a soft soap in the making. Thank you for reading!

Leave a Comment

Your email address will not be published. Required fields are marked *