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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To wonder how to get rid of liquid fat?

143 replies

CarlaH · 11/07/2026 11:29

We keep being told not to pour oil or liquid fat down the sink because it causes problems for the water companies.

How are we meant to dispose of it? Googling says we should put it into a glass or plastic container and throw it into the main waste but we are supposed to recycle those things aren't we?

I don't have suitable empty glass or plastic containers just lying around and I certainly don't have plastic containers with lids apart from the ones I want to keep like Tupperware.

What do most people do with it?

OP posts:
pinkpony88 · 12/07/2026 18:52

NannyR · 11/07/2026 11:56

Our water company (Yorkshire Water) gives out free Gunk Pots - a small silicone container with a lid and a scraper, specifically for getting rid of cooking fat.

I didn’t know this! Il have to get one! 😀

Wickedgreengirl · 12/07/2026 18:54

Pour it into a cup/bowl, let it solidify and then bin or pop it in the food waste bin.

Hellohelga · 12/07/2026 18:55

I add some flour then put the goo in the food bin.

sohard · 12/07/2026 18:56

I put it into a tub that I plan to throw away and when I use kitchen roll I put that in the tub to soak up the oil and then bin it.

BMW58 · 12/07/2026 18:58

I pour fats into an empty tin to solidify.
Oil is poured into an empty milk or oil bottle that has a screw top lid.

When each is full it goes into the general waste.

Never, ever, put any fats or oils into the sink - unless you really like the idea of your shit coming back up the toilet and flooding your home.

moggerhanger · 12/07/2026 18:59

I tip it onto the ground behind my shed. Probably not best practice, but I don't do it often.

If it's excess oil from something like a casserole, I sometimes freeze it in an old dip pot. Then I have flavourful oil for when I'm cooking next. Waste not...

ThisAgileScroller · 12/07/2026 19:10

I just pour mine back into the bottle it came in and then chuck it in the bin. Some 'tips' have oil parts where you can get rid

mmmarmalade · 12/07/2026 19:15

I have a dog so have dog poo bags. I put some kitchen towel in them and pour or scrape any fat into them. We are allowed to put food waste in with our green bin (grass cuttings, etc) so that's where it goes - I never pit fat down the sink or toilet. The same goes for any dairy products that have gone off - yoghurt, cheese, butter, cream even milk. I use kitchen towel to wipe frying pans out when I've friend bacon or sausages, etc and put that in the green bin too.

Greengagesnfennel · 12/07/2026 19:15

CarlaH · 11/07/2026 11:35

That's interesting. I don't suppose you have a link?

I am so glad you posted this question and got this response. I store lleft over cooking fat in old milk containers and take it to the tip but this is a revelation. I have just bought that fat solidifier from Amazon as that sounds so much easier!!

oncemoreuntothebeachdearfriends · 12/07/2026 19:16

I never throw away meat fat, I use it.
It's full of flavour, so good for roast veg, fried eggs, soup base, etc.

concertinacornflake · 12/07/2026 19:20

CarlaH · 11/07/2026 11:35

Any fat that is solid enough goes in our food bin so fat from frying bacon for example isn't a problem. Fortunately we don't deep fry anything so don't have loads of oil.

Just pour it into a jar, put in fridge, put into food waste once solid.

concertinacornflake · 12/07/2026 19:23

Greengagesnfennel · 12/07/2026 19:15

I am so glad you posted this question and got this response. I store lleft over cooking fat in old milk containers and take it to the tip but this is a revelation. I have just bought that fat solidifier from Amazon as that sounds so much easier!!

Edited

Why don't you put the fat in the milk container in the bin?

It seems environmentally stupid to buy and ship a chemical product rather than just putting the fat into a used yogurt pot in the bin.

WhereYouLeftIt · 12/07/2026 19:30

CarlaH · 11/07/2026 11:53

Sadly it didn't solidify at all. I suppose it was more juice than fat.

With stuff like that I would put it in a bowl and stick it in the fridge - the fat/oil would then solidify and I'd skim it off the top and put into food waste. I'd then flush the no-longer-fatty juice down the loo.

Another way I have disposed of oil is to soak it into used teabags. I've usually dried the teabags out (I have a dehumidifier running in one room at all times - don't ask) and so they can soak up a reasonable amount safely. You could also use stale bread or unused flour in the same way, then put them in food waste.

Trotula · 12/07/2026 19:31

CarlaH · 11/07/2026 11:34

What prompted the post was some liquid we poured from a slow cooked pork dish. It's usually not that much and I mostly tended to get very hot water and loads of washing up liquid and let it go down the sink but apparently we shouldn't be doing that.

I pour into a small bowl and refrigerate which makes it solidify then put into a paper bag and place in food recycling or kitchen bin.
if it’s a relatively small amount then use kitchen paper towels to absorb and place in kitchen bin. It’s worth doing this with any greasy pots and pans like a frying pan or baking tray.
The problem with pouring it down the sink is that it can solidify somewhere along the way and then food particles etc get trapped and you will have a blockage.

2Rebecca · 12/07/2026 19:33

I put in jar or plastic container then bin. Keeping fat our of the water system is more important than recycling every single recyclable thing

Islandgirl68 · 12/07/2026 19:35

@CarlaH I keep an empty jar, fill with oil when we have some, when full, put in bin. Then use next empty jar.

rwalker · 12/07/2026 19:39

For smaller quantities I wait till kitchen bin full then pour it on top and empty bin rubbish soaks it up

sueelleker · 12/07/2026 19:42

Soak it up with kitchen paper, then wrap the paper in foil and put it in the regular waste bin.

TooHotToBoogie · 12/07/2026 19:42

Pour it on a crust of bread to soak it up then in the food waste bin

MrsJeanLuc · 12/07/2026 19:49

CarlaH · 11/07/2026 11:53

Sadly it didn't solidify at all. I suppose it was more juice than fat.

If it didn't solidify then it wasn't fat it was the meat juices and you should have eaten it with the casserole 😋.

If it's meat fat just wait for it to solidify and scrape it into the bin / wipe away with kitchen roll. Small amounts of oil can be soaked up with kitchen roll. Larger amounts can be poured into an empty tin (did you put tinned tomatoes or sweet corn in your casserole?) and binned.

JulietteHasAGun · 12/07/2026 19:50

https://www.bbcgardenersworldlive.com/make-fat-balls-for-birds-winter-gwaf25/

fat balls for birds.

RustyBear · 12/07/2026 20:00

Solid fat goes in the food waste caddy and then in the kerbside food waste bin. I rarely have liquid fat, but our council tells us to put it in a sealed bottle and put it in the food waste bin

AnneElliott · 12/07/2026 20:09

I pour it into the food water container - but only if there’s enough veg and leftover food to soak it up.

fetchacloth · 12/07/2026 20:37

I wait for it to cool and pour it into a sandwich bag, tie it securely and bin it in general waste.
For a small amount I blot it with kitchen paper and bin it.

Abouteffingtime · 12/07/2026 20:40

Food bin. With a bit of kitchen roll.

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