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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To wonder how to get rid of liquid fat?

165 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:
OtherS · 11/07/2026 12:16

I use foil at the bottom of the roasting pan, wait for it to cool, and throw the foil away with the congealed fat. Anything left I wipe paper towels and throw away, which is also what I do when there's not too much fat, like when pan-frying. On the rare occasions I use lots of oil to fry onions, I pour the cooled oil into plastic container and just use as regular oil until it's gone. So I'll use that for roast potatoes for example, rather than my fresh oil from the bottle. Not only does it taste great, but saves money; I use cold-pressed rapeseed so can't afford to be chucking pans of it away! I don't deep-fry meat or anything, not sure if I'd be as keen to reuse that oil.

VoteForCountBinface · 11/07/2026 12:14

You are nuts to have been pouring it down the drain. The drain is not a bin.
It sets in the pipe or it goes to the sewers and adds to fatbergs.

Get something that's not recyclable like an empty pot or pouch that's too grubby to wash and recycle and pour it in that, then put it in the bin.

You can stick it on a piece of paper (a piece old newspaper or magazine) then bin it when set.

Oldraver · 11/07/2026 12:08

We don't have lots of liquid fat but know what you mean about fat after cooking (ribs are bad for this)

We keep a plastic box in the freezer lwith a food bag in, if we have any liquid we chuck bread crusts in the bottom and pour it onto that, then 0op back in the freezer until bin day

Loubissou · 11/07/2026 12:07

We don't have much or often. It goes in an empty plastic bottle with our food waste.

Dollymylove · 11/07/2026 12:05

shellyleppard · 11/07/2026 11:31

Put a bit of tin foil in the plug hole. Pour the fat in. When it sets scrunch up and chuck it in the bin?

Or put it out for the birds

HelloCheekyCat · 11/07/2026 12:04

I just keep.a jar from coffee/jam/pasta sauce and pour any fat in, then I. The general.waste bin when it is full.
Ours is usually from cooking mince or liquid fro. A whole chicken which probably wouldn't solidify but is a bit gross

TheTortiePuffinNeedsHerBreakfast · 11/07/2026 12:04

I don't have a lot, but when do I pour it in the garden under the bushes

Chasingsquirrels · 11/07/2026 12:04

I use am empty oil bottle (sunflower or olive oil).
Keep it on the side & empty meat juices (roast chicken & sausages mainly) into it.
When it is full I put it in a bread bag, tie it off & put in the general rubbish.
Takes several months to fill a bottle, but it has a cap so it just sits there on the side.

minipie · 11/07/2026 11:59

I tip it into a small bowl / ramekin and put in the fridge.

Night before bin day, I scrape any bowls of solid fat into the bin ready for collection the next day.

no plastic is involved

LondonLass61 · 11/07/2026 11:58

I put it in a foil dish, let it harden and then leave it out for the birds.

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.

CarlaH · 11/07/2026 11:54

Thanks for the responses. Maybe I will just stick a jar in the fridge and let it build up over a few months.

OP posts:
CarlaH · 11/07/2026 11:53

TheSmallAssassin · 11/07/2026 11:39

Meat fat will solidify, so you could just have scraped that into the bin when it was cold and solid, or into some kitchen roll to be binned.

I keep an empty tin can by the sink and empty any fat or oil into it, when it's full, I scrunch some kitchen roll in the top and nestle it upright in the kitchen bin, to go out with the general waste. That minimises the tins that don't go to recycling. Ghee tins are great because they have a lid.

Definitely not down the sink, that's how fatbergs form and they cost us millions.

Edited

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

OP posts:
Somersetbaker · 11/07/2026 11:53

Solidified fat goes in the bin, wrapped in newspaper, used cooking oil from deep frying gets stored in a plastic bottle then gets taken to the recycling centre / tip.

DeftGoldHedgehog · 11/07/2026 11:51

I rarely if ever do deep fat frying. I do cook with small amounts olive oil and cold pressed rape seed oil which then gets washed away in the sink but I'm not sure what can be done about that tbh.

PGmicstand · 11/07/2026 11:50

Pour into porridge oats and put out for the birds
Pour into flour or any other absorbent medium then put in food waste bin, or just wait until its solid and put in food waste.
If it was fat from meat, my grandparents (and parents) would have poured it into a bowl and when it was cool, spread it on bread ("bread and dripping")

PickAChew · 11/07/2026 11:50

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.

In that situation I put some clingfilm in a small bowl, spoon the fat off the surface into it and let it cool.

TonTonMacoute · 11/07/2026 11:49

I put mine in a jar and chuck it. I don't use that much so I only end up throwing away one glass jar every few months, the current one has been going for ages. The world isn't going to end any sooner because of that. It's far better than putting the fat into the drains

FeelingALittleWoozyHere · 11/07/2026 11:48

shellyleppard · 11/07/2026 11:31

Put a bit of tin foil in the plug hole. Pour the fat in. When it sets scrunch up and chuck it in the bin?

This

Davros · 11/07/2026 11:48

I usually find a random container that would normally be recycled but, as others have said, not recycling one bottle, tin or pot is better than pouring fat down the sink

ThatsTrash · 11/07/2026 11:47

When tidying up after a meal, reheat the fat slightly and pour it into an empty jam (or other) jar. Put the lid on and do the same next time you have leftover fat until the jar is full. Then put the jar full of fat in your landfill bin. Then you are only 'wasting' one recyclable container.

rumred · 11/07/2026 11:46

I put mine on the garden some place, hoping it'll add something to the soil. However it's never meat based. And never very much.

Topa887 · 11/07/2026 11:43

We pour it into a container, then drop it off at the local Chinese takeaway. They get paid for their waste oil so they dont mind.

Kalanthe · 11/07/2026 11:40

Don't deep fry, it's so unhealthy. If you insist on having fries you can make them in an air fryer.

If there are little quantities of oil left from normal frying, I just pour them in the bin as there are always kitchen towels etc in there to absorb it

TheSmallAssassin · 11/07/2026 11:39

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.

Meat fat will solidify, so you could just have scraped that into the bin when it was cold and solid, or into some kitchen roll to be binned.

I keep an empty tin can by the sink and empty any fat or oil into it, when it's full, I scrunch some kitchen roll in the top and nestle it upright in the kitchen bin, to go out with the general waste. That minimises the tins that don't go to recycling. Ghee tins are great because they have a lid.

Definitely not down the sink, that's how fatbergs form and they cost us millions.