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What do you do with old cooking grease?

Reuse Cooking Oil

If you plan to deep-fry soon or fry foods on a regular basis, you can save the cooking oil to use again. First, strain the oil through a coffee filter or several layers of cheesecloth to remove any particles and crumbs. Then, pour it into an airtight container and store in a dark place until ready to use.

It is important to note that you should reuse oil only once or twice. Give it a sniff before using it; if it smells rancid, toss it out. Remember that each time you reuse oil, the oil deteriorates and the smoke point (the temperature at which it will burn) decreases.

How to Get Rid of Bacon Fat


Save the Used Oil for Future Cooking

Leftover and cooled cooking oil and fat isn’t enti

Leftover and cooled cooking oil and fat isn’t entirely unusable. It can still be used in future cooking to add depth and flavor. Many vegetable and animal fats can be strained and then stored in a sealed container in a dark place.

Use cheesecloth or a coffee filter to strain the oil. Straining removes any particles and crumbs. Pour it in an airtight, sealable container and then store it in a refrigerator or a dark place.

For saturated fat that has hardened, let it liquefy at room temperature. Cover a glass container with either cheesecloth or paper towel. Pour the fat in the container. Finally, store the sealed contained in a fridge or a dark place for later use.

The same process can be used for unsaturated fats. However, there is a caveat. The unsaturated fats, such as peanut, corn, or vegetable oils, should not exceed the smoking point of the oil. The smoke point of an oil or fat is the temperature at which oil begins to produce a continuous bluish smoke and becomes clearly visible.

Here are some smoking points of common cooking fats and oils.

When the oil exceeds its smoking point, it can become bitter. Moreover, the oil can also be a health risk due to free radicals.

How Do I Treat a Grease Burn?


For A Grease Burn With Open Blisters Unlike a burn without open blisters, you should not run cool water over the burn. Also, if there is any clothing that is stuck to the burn, don't remove it. You may, however, apply a sterile, dry bandage (such as a gauze pad), again avoiding the application of tape to the burn.

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How Not to Dispose of Cooking Oil and Grease

The trash can is the best way to dispose of cooking oil, but people often try to get rid of grease and cooking oil in other ways that are not advisable. Follow these important rules when disposing of grease:

1. Don’t Pour Oil Down the Drain

Pouring oil down the drain or toilet causes clogs in your home plumbing system and contributes to larger clogs in the municipal lines that can ultimately lead to thousands of dollars’ worth of damage.

Oil and grease may be liquid when hot, but will cool inside your pipes, congealing and gathering other oil particles. As the grease collection grows, it will prevent water from flowing through and cause it to back up into your kitchen and bathroom.

“Never pour cooking oil or grease down a drain. Hot cooking oil will solidify inside the drainpipe just like candle wax, which gradually decreases the diameter of the pipe with a greasy buildup until the pipe stops draining altogether.”

Paul Abrams | Roto-Rooter Services Co.

What if Grease Goes Down the Drain?

Accidents do happen when it comes to cooking oil disposal, especially when you have guests trying to help you tidy up after a holiday meal.

If grease or cooking oil does make its way into your sink, take immediate action with these tips from Roto-Rooter:

  • Pour baking soda and white vinegar down the drain to clear some of the grease away.
  • Try an enzyme-based drain cleaner, like Roto-Rooter’s Pipe Shield, which helps neutralize grease in both metal and PVC pipes.

If your sink is still slow, use a plunger to further dislodge the grease clog. Not having any luck with these fixes? Unfortunately, you will need to call a plumber.

2. Don’t Pour Used Cooking Oil Outside

Tossing your used cooking oil outside is not a proper way to dispose of grease. If you pour oil on the ground, it will eventually make its way into the sewer system and cause clogs there.

Additionally, animal or vegetable-based oils and greases can cause issues for wildlife when left outside, according to the EPA.

3. Don’t Dispose of Cooking Oil in Your Compost Pile

While small amounts of vegetable-based oils in your compost may be fine, a large amount will cause airflow and moisture issues, ruining your fertilizer.

Animal fats should be kept out of your compost pile because they will smell, attract vermin and cause other problems that could make your compost unhealthy. No matter what type of oil or grease you’re using, do not dispose of it in your compost pile.

How long does vegetable oil last after use?

“Once you have opened the oil, it should be used in the first two to three months. However, a well produced and high-quality product could last up to one year, again stored in a dry cool place and lid tightly sealed.”

What to Do With Grease: Paying Attention on House …


Grease builds-up in almost any of your essentials. From your clothing to your home's surfaces, this is the worst type of stain to deal with. You need to focus your attention on what will be best not just to cover up the stain but on what to do to remove it from the spot.

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Can rancid chips make you sick?

Although consumption of rancid food can cause gastrointestinal illness, few outbreaks have been documented. In October 2015, an outbreak of gastrointestinal illness occurred at a Wyoming correctional facility. Epidemiologic and laboratory evidence implicated rancid tortilla chips as the likely source of illness.

How do you dispose of cooking oil at home?

DO wait for the oil to cool down before disposing of it. Hot oil is a safety hazard. DO soak up small amounts of oil with paper towels and throw them out with other garbage. DO let larger amounts of oil to cool and solidify before you scrape it into a waste container and dispose of it in your general waste.

Is it OK to pour grease down the drain?

Pouring grease down the sink drain is never acceptable. Doing so can cause major plumbing problems that can affect the entire sewer system in a home. Not only can grease cause backups and clogs, but it builds up over time and coat pipes.

Combine With Other Material

Before disposing, you can mix the oil with an absorbent material like cat litter, sand, and sawdust, which easily soaks up the liquid. Save old oil in a used container until it is time to empty the litter box; dump the oil into the litter before tossing out. 

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