How to Dispose of Cooking Oil Properly


In this world of tastes, everyone loves eating. Fried food such as fried chicken, fried fish, and other flavorful foods are famous worldwide.

One of the primary ingredients of such fried food is cooking oil. Most of the time, you get a good amount of oil leftover. But you probably don’t know what to do with oil after frying your favorite food.

What to Do With Used Cooking Oil?

Considering the quantity of oil leftover, determine whether you want to trash it, reuse it in other foods, or recycle it.

If you want to reuse it, there are many ways to do so. The best of them are listed below.

Reuse Oil to Fry Other Food

One of the best ways to utilize the used cooking oil is to reuse it for frying more items. You can use it to fry vegetables, potatoes, or anything you want. It is also safe to cook a meal in used cooking oil.

But keep the following precautions in mind while reusing the leftover cooking oil for frying.

  • Avoid deep frying in the used cooking oil.
  • Don’t use it more than thrice if you fried chicken, fish, beef, or seafood in it.
  • Frying potato chips keeps the oil cleaner. However, don’t reuse it more than 8 to 10 times.
  • Don’t forget to filter it each time.
  • Once it starts looking cloudy or creating foam at the surface, stop using it immediately.

Freeze the Oil

If you have a large amount of oil leftover and you have no need of it shortly, freeze it. You can not only store it for later use but also handle it easily in frozen form.

To freeze the cooking oil after frying, follow the steps below.

    1. Let the oil cool down.
    2. Filter out the food particles from it.
    3. Pour it into an airtight container.
    4. Place the container in the freezer.
    5. Use it within a year or two.

What to Do With Oil After Frying?

After using the cooking oil several times in cooking, you need to get rid of it in proper ways. But how to get rid of cooking oil left behind after frying?

Make Soap from Used Cooking Oil

Making soap from used cooking oil is a common practice. Anyone can do it at home, but with some cautions.

Wear a pair of gloves and follow this simple guide to make soap from cooking oil at home.

    1. Take one liter of water into a stainless steel container.
    2. Add around 150g of caustic soda (also known as lye) and mix it until it gets dissolved in water.
    3. As the caustic soda caused a significant temperature increase, let the mixture cool down at 30 – 40 degree temperature.
    4. Take one liter of cooking oil (equivalent to water) and heat it on flame.
    5. Filter the oil and add it to the mixture.
    6. Stir the mixture continuously until it gets thick enough.
    7. Pour the mixture into the mold and let it dry.
    8. Use it after a month or two when ready.

Donate Oil to a Local Collection Site

Some municipalities have local collection sites which collect used cooking oil for recycling. To donate oil to such a site, follow the instructions listed below.

  • Find a local collection center near you by using the locator or Google Maps.
  • Strain the oil using a cheesecloth or coffee filter to remove food particles.
  • Pour it into a container and deliver it to the collection center.

Convert Cooking Oil into Biodiesel Fuel

Cooking oil can be converted into biodiesel fuel through a process called transesterification. But it requires a large quantity of oil to process it.

However, some kits are available to convert cooking oil into biodiesel fuel. But it is recommended to contact a professional to do so.

Can You Pour Oil Down the Drain?

You might be thinking you can pour it down into your sink or toilet. What if you know it can cost you hundreds of dollars?

If you continuously pour oil down the drain, it can clog the sewer system. Undoubtedly, nobody wants this to happen.

Then how to get rid of cooking oil?

How to Dispose of Cooking Oil?

The only best way to dispose of cooking oil is to throw it into the trash. But should you throw it directly into the dustbin?

No, you can’t throw it directly into the dustbin. Just follow these steps to dispose of cooking adequately.

    1. Let the oil cool down before thinking about disposing of it.
    2. Pour it into an extra container or jar. You can also use an old plastic bottle for this purpose.
    3. Tight the container’s lid because you don’t want dirty oil to come out of the container.
    4. Throw it into the trash can.

Always wipe your utensils with towel paper that became in contact with cooking oil before rinsing them in the sink. If you don’t wipe them off, the small amount of grease in draining can cause a problem over a more extended period. And then you might have to call your plumber.