this post was submitted on 04 Aug 2025
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I used to pour it into a glass jar. But these days I'm just using a paper towel or 3 after it dries and chuckin it in the bin.

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[–] bort@piefed.world 100 points 2 days ago (5 children)

Are you renting or do you own?

[–] actionjbone@sh.itjust.works 55 points 2 days ago* (last edited 2 days ago) (7 children)

Depends on what kind of leftover fat.

If frying something in measurable quantities of oil, the oil can be filtered to remove solids, then stored to re-use later.

If cooking something greasy like bacon or sausage, either I'll cook other things in the same pan after, or I'll pour it through a strainer, let it cool, and freeze it. Once I've saved a bunch, I clarify it.

Fat is flavor. In my house, it doesn't get thrown away. There are lots of ways to reuse it.

[–] ObtuseDoorFrame@lemmy.zip 22 points 2 days ago* (last edited 2 days ago) (2 children)

Reusing cooking oil causes cancer. I thought this was wildly known, but I'm consistently surprised at how many people online say things like this.

This is why "drip jars" stopped being used in the 20th century. There used to be one in every house until it was understood it causes stomach cancer.

https://www.adityabirlacapital.com/healthinsurance/active-together/2025/01/27/cooking-oil-and-cancer/

https://www.sfa.gov.sg/food-safety-tips/food-risk-concerns/risk-at-a-glance/reusing-cooking-oils

[–] TheReanuKeeves@lemmy.world 16 points 2 days ago

That's if you take it beyond the smoke point. Which you wouldn't do if you are trying to avoid free radicals in your food to begin with. Even vegetable oil is extracted through a heating process.

[–] inconel@lemmy.ca 16 points 2 days ago* (last edited 2 days ago)

But singapore site links USDA q&a on how to reuse it safely and has section for "what you need to do if you reuse oil". They don't particularly advice or encourage single use.

Oil quality is dependent on storage method (strain it with filter, keep airtight non-transparent container etc) and cooking temperature so people need to be informed, but I don't see reusing it once or twice with appropriate care cause significant harm.

[–] naught101@lemmy.world 14 points 2 days ago (2 children)

Popcorn made in pre-used oil can be awesome, and an easy way to get rid of 100ml or so.

[–] TheReanuKeeves@lemmy.world 20 points 2 days ago* (last edited 2 days ago) (1 children)

Omfg...bacon grease popcorn...I'm about to take 10 years off my life

[–] naught101@lemmy.world 5 points 2 days ago

Hell yea. I used some oil recently that had be used to good something (IDK.. housemate food) with heaps of curry powder flavours and some chilli. That was awesome.

[–] WoodScientist@lemmy.world 5 points 2 days ago (2 children)

Popcorn made in pre-used oil can be awesome, and an easy way to get rid of 100ml or so.

Then there was that time in college I tried to re-use oil I had previously fried shrimp in.

Turns out shrimp-flavored popcorn is not an enjoyable experience!

[–] theherk@lemmy.world 7 points 2 days ago

Some lessons only take once to cement the learning for a lifetime.

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[–] wesker@lemmy.sdf.org 32 points 2 days ago

Wipe with paper towel, toss in trash.

[–] sbv@sh.itjust.works 26 points 2 days ago

I let it cool off and then scrape it into the trash/compost. Sometimes I use a paper towel, sometimes I just scrape it.

[–] Drusas@fedia.io 20 points 2 days ago (1 children)
[–] Zephorah@discuss.online 5 points 2 days ago (2 children)
[–] theherk@lemmy.world 4 points 2 days ago

Not all oil is salty. I suppose there are probably pros and cons to composting it, but I'd expect it to draw pests like crazy.

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[–] jet@hackertalks.com 16 points 2 days ago (2 children)

Depends how much is left. Alot then filter and jar. A little then paper towel and trash.

[–] fartsparkles@lemmy.world 21 points 2 days ago (1 children)
[–] jet@hackertalks.com 6 points 2 days ago* (last edited 2 days ago) (1 children)

Uwu, its sooooooo cut. They're magestic horns; and the lux fur, et al. Their snaggle teeth, that pacific one, is just hte peice of resistance!

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[–] phonics@lemmy.world 6 points 2 days ago (1 children)

A filter? What you doing with the filter?

[–] jet@hackertalks.com 14 points 2 days ago (2 children)

Filtering out any chunky bits from the cooking so it doesn't go back into the fat jar

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[–] ChicoSuave@lemmy.world 14 points 2 days ago (1 children)

If it cools into a solid fat then it goes in a bowl and put it outside for wildlife to enjoy some easy calories. A trail cam and some time has given me a good chunk of backyard nocturnal drama, like the falling out of two tomcats.

Liquid fat/oil is used to re-season pans or soaked up with a paper towel and dumped.

[–] garbagebagel@lemmy.world 5 points 2 days ago

Man, living in a house sounds so cool sometimes πŸ₯²

[–] omgboom@lemmy.dbzer0.com 14 points 2 days ago (1 children)
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[–] BlameTheAntifa@lemmy.world 12 points 2 days ago

You can compost it if you aren’t generating huge amounts. Mix it with something absorbent like sawdust or used coffee grounds and mix into a composter, and add extra β€œgreen material” like leaves or lawn clippings.

[–] jbk@discuss.tchncs.de 11 points 2 days ago (1 children)

Our city's trash disposal also provides free plastic buckets for cooking oil. I try to use that as often as possible. I love it

[–] phonics@lemmy.world 6 points 2 days ago

Oh that's cool actually. I hadn't heard of that before.

[–] Onomatopoeia@lemmy.cafe 8 points 2 days ago* (last edited 2 days ago)

Other than pan frying something like chicken, I don't really have "leftover fat".

Bacon - ya pour that right into the bacon fat container that has its own strainer.

Most other recipes the fat is part of the dish. As someone else commented - fat is flavor. Say you brown chicken parts for something like Gumbo, the next thing in the pan will be vegetables that get glazed, and you're gonna need a fat for that which is already there in the pan.

[–] paequ2@lemmy.today 7 points 2 days ago* (last edited 2 days ago) (2 children)

I currently use (probably too many) paper towels to absorb the oil and then toss them into the trash can. I'm not happy with this solution, but I don't want to pour it down the drain.

I found this the other day https://fryaway.co/ but I haven't tried it yet. It's supposed to make the oil solid so you can more easily toss it.

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[–] Zephorah@discuss.online 7 points 2 days ago (1 children)

I use an iron skillet for most things, it gets cleaned then takes up real estate on a stove burner until the next day.

Most of the time it’s just enough oil to sear things. Salmon. The white meat chicken with a bacon iron on top. Each needs some oil for Maillard rxn on the hot iron and non-stick, in addition to flavor and moistness.

It’s liquid at room temp. It’s minimal. When the pan is cool enough, a dollop of dawn, a light abrasive without a lot of pressure (it’s a tactile thing, cast iron people know) and the soap slurry goes right down the drain. I’ve owned for 25 yrs, no issues.

(Because someone is about to start text screaming: If it’s a new cure or a cure done in 1-2 layers or a weaker fat, any abrasive or cleaning will likely kill it. I use lard for my cures while lightly washing with hot soapy water in between. 5 layers/rounds of cure. Then oil it after each use for the first month post new cure. Then, it’s solid, just wash and dry, and you can use a light abrasive. We have a 12, a 10, three 8s, and three 5s in circulation.)

Now, if I make Pho, I’m not skimming the beef tallow/oil off into the sink. I wait for the broth to cool, crack the disc of solid lard off the top, and drop it in the trash.

Popcorn pan, sink. Salmon in the pan, sink. Dark meat chicken in the pan, cool and scrape those solids into the trash.

It’s about amount and what it does at room temp.

[–] KittenBiscuits@lemmy.today 6 points 2 days ago (3 children)

I respect that you were brave enough to admit on the internet to using a little soap now and again with your cast iron. It took me about a year after I rehabbed mom's pans to work up the courage to gently swipe a little soap on them now and again. They still get dried in the oven and moisturized with avocado oil. Mah bebes.

[–] WoodScientist@lemmy.world 4 points 2 days ago (2 children)

I do not baby cast iron at all. I use plenty of dish soap and scrub it. But then again, I've also to completely refinished cast iron before. You learn to appreciate how durable seasoning can be when you actually try and remove it. My main skillet I've in the past taken it down to bare metal with an angle grinder, then built the seasoning back up from nothing.

[–] Fondots@lemmy.world 5 points 2 days ago* (last edited 1 day ago)

My first exposure to cast iron was through boy scouts with cast iron griddles and Dutch ovens cooking on an open fire.

They got left out in the rain, blasted with heat hot enough to melt lesser metals*, had all manner of acidic foods cooked in them, got scrubbed clean with steel wool and dish soap, spent most of their lives when they weren't in use in a garage with no climate control where the humidity often got pretty gross, and generally got used, abused, and neglected. Never had any issues with the seasoning, rust, etc. I think one time after a camping trip by the beach where they sat out getting lightly twisted with salt spray all weekend, they picked up a bit of rust, so someone's dad got them sandblasted at his job, and after a trip or to through the oven for reseasoning they went right back in service, and that was the only special treatment they ever got.

So it was really weird to me when I got older and got some pans of my own to see people talking about babying their cast iron like they do. I'm a little more careful with my pans than I was with the ones we had in scouts, but not by much. And when I take them camping I'm not above throwing them into the fire to burn off any really stubborn, burnt-on crud.

And at the end of the day, there's not much that you can realistically do to a cast iron pan that you can't fix with some sandpaper and elbow grease and a quick reseasoning.

*At one point, we somehow ended up with an aluminum griddle in one of our cook kits. It was a pretty much indistinguishable from our iron ones except that it weighed less, it was a pretty solid griddle. On one camping trip it was left on the fire after breakfast, and I don't know exactly how it came to pass because it was another patrol, but they somehow got the fire up hot enough to melt it. I still have a blob of aluminum somewhere that we fished out of the ashes.

I did the same with these pans too. Though I didn't need an angle grinder. A day or two in a trash bag marinating in oven cleaner, then some steel wool and elbow grease. That's why I call them my babies, they are antique pans that sadly had gotten rusty and I gave them new life. They were my mom's, and before her, her great-grandma's pans (and maybe someone else's before then but we, the family, have lost track).

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[–] mechoman444@lemmy.world 6 points 1 day ago (1 children)

What I totally don't ever do under any circumstance at anytime for any reason even though it's super convenient and easy is pour it down the sink. Yes sir. That's not something I ever, ever do! Wouldn't it be crazy if I did? Omg. So crazy!

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[–] Nemo@slrpnk.net 6 points 1 day ago (1 children)

Left... over?

If I'm deepfrying, I set it aside and reuse it.

If I cooked something like bacon that gave off fat, I save it and use it to cook other things later.

If I was sautΓ©ing something, I used the correct amount of oil and there's none left over.

If I was roasting something, I turn the pan drippings into a sauce.

I will say, if you're having this problem a lot cooking meat, you're probably not trimming the cuts properly before cooking. Trim those and throw the scraps in the freezer until the next time you make stock.

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[–] victorz@lemmy.world 5 points 2 days ago

I usually just pour it over the rice or macaroni or whatever, to consume whatever little is there, so as not to waste it, and for flavor.

I try to fry stuff in tallow as well, which is a lot nicer IMO.

[–] seathru@lemmy.sdf.org 5 points 2 days ago (4 children)

Straight down the sink. It's a rental.

[–] deadbeef79000@lemmy.nz 38 points 2 days ago

It's not only the rental's pipes that suffer from fat buildup. It's the entire city's pipes.

[–] 474D@lemmy.world 19 points 2 days ago

You might be surprised to learn that those pipes connect to your entire community and you're being a dick to all of them instead of doing the bare minimum of effort

[–] A_Union_of_Kobolds@lemmy.world 8 points 2 days ago (4 children)

There are better ways to sabotage a rental without screwing with the rest of the plumbing system

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[–] MadMadBunny@lemmy.ca 6 points 2 days ago

What the fuck

[–] fodor@lemmy.zip 5 points 2 days ago (1 children)

Stopped deep frying. Partly for health and partly out of laziness.

[–] phonics@lemmy.world 5 points 2 days ago (1 children)

I was talking about just in your pan. Like after bacon or whatever

Save your bacon fat in a jar, it's clutch. You can do the same with beef tallow. Need to saute some onions for rice and beans? Bam, fry them in bacon fat. Stew recipe calls for vegetable oil to saute your carrots? Fuck that, tallow it. Some traditions exists because they work.

[–] spankmonkey@lemmy.world 5 points 2 days ago (1 children)

If I want to keep the fat, like from bacon, then I strain it through cheesecloth into a small jar and use it occasionally.

If I don't want it, then if it gets solid at room temp it gets to cool and be scraped into the bin. If it is a liquid at room temp it goes into a ziplock bag or something to keep it from leaking.

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[–] QuarterSwede@lemmy.world 4 points 2 days ago

Other than saving it for use later when possible, we let it solidify and scrap it into the trash.

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