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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:
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.

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.

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:
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:
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.

LondonLass61 · 11/07/2026 11:58

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

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

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.

TheTortiePuffinNeedsHerBreakfast · 11/07/2026 12:04

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

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

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

Loubissou · 11/07/2026 12:07

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

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

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.

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.

Lomonald · 11/07/2026 12:18

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?

Yes this is usually what i do , i get we are encouraged to recycle @CarlaH but putting some fat in a food tray or bottle isn't going to impact the environment that much.

swoopandscream · 11/07/2026 12:20

Pour into old egg box and put it into the food waste bin for collection. Line the bin with a bit of cardboard or newspaper in case it leaks a bit.

AquaWhichIsFrenchForWater · 11/07/2026 12:20

I pour it into a bowl, let it solidify then scoop it out into the general waste.

Although, with the current heat, the contents of the bowl has turned into a liquid again.
The cat keeps trying to drink it (she knows not to get on the counter, but liquid lard is clearly too tempting for her!) so I’m about to shove the bowl in the freezer, then throw it out for the birds this evening.

dementedpixie · 11/07/2026 12:22

I pour it into a freezer bag and bin it

Pickledonion1999 · 11/07/2026 12:23

we pour into a little pot. Let it solidify then wrap up and put in the bin.

gingermice · 11/07/2026 12:24

Same as the poster above, I pour it into a small plastic/freezer bag and bin it.

FinallyHere · 11/07/2026 12:27

The fat that is rendered from duck, goose or pork belly/ribs gets recycled here into the most delicious roast potatoes, or fat to brown a joint or start a stir fry.

We meal plan so it would be kept in a container in the fridge and used up within in a day or two.

Especially duck fat is at least 50% monounsaturated, quite delicious and healthy for the heart.

Chasingsquirrels · 11/07/2026 12:29

My council website says:

  • Cooking fats: Food waste, but don't put liquid or cooking oil into the food waste.
  • Cooking oil: General rubbish.
GETTINGLIKEMYMOTHER · 11/07/2026 12:29

I rarely have very much, so I just mop it up with kitchen roll and put it in the general waste. Or, as a pp said, it’ll go into a Bird Pudding in winter - any fat, any scraps of solid fat, bacon rind etc., any crumbs or crusts, dry porridge oats, probably some dried fruit, and lard, if there’s not enough fat to hold it all together. Melt all the fat, stir everything else in, pack into a basin to cool and set. The birds will thank you!

Theyreeatingthedogs · 11/07/2026 12:39

Our garden and kitchen waste go into the same wheelie bin. When the wheelie bin is full I pour the oil or fat in there.

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