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I was going to make a dessert with whipped cream but events interfered and I now have a large (sealed) pot of double cream left in the fridge. My next opportunity to make the dessert will be next weekend when the cream will be about five days past its use by date.

Experience tells me that cream will still taste fine well past its use by date, so I am not worried the cream will taste sour. However I have never tried to whip cream that is past its sell by date. Googling has found sites with advice ranging from "it'll be fine" to "OMG throw it away now" so I'm no further on. The question Can sour cream be whipped? tells me that soured cream won't whip, but this cream is going to be nowhere near sour by next weekend.

Does anyone know if I'll face problems trying to whip it? If so I'll try to find another use for it or throw it away (though that seems a shame).

I should add that this is ordinary pasteurised (not UHT) double cream from a UK supermarket, so it's 48% fat, and it has not been opened so no bugs will have got in since pasteurisation.

Anastasia Zendaya
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John Rennie
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  • In the UK, is it a 'use by' or 'sell by' date on the package? I've used (including whipping) unopened heavy cream well past the sell by date on the carton with no issues whatsoever. – Jon Custer Jul 13 '21 at 14:38
  • @JonCuster it's a "sell by" date, and I've also found the sell by date to be conservative. But I've never tried whipping cream past its sell by date. – John Rennie Jul 13 '21 at 14:39

2 Answers2

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It depends on how the cream was treated. If it has buttered up, or is just on the cusp of either buttering or turning sour, you can no longer whip it, it will coalesce and curdle instead of creating a foaming. It is a gradual thing, you cannot say when a given batch of cream will whip well and when it will curdle. The most you can do is to note the relative probability of 'not whipping' compared to a cream that has been treated in a different manner.

These probabilities are, in increasing order of success:

  • raw milk from the cow, left to cream up
  • cream that has undergone traditional pasteurization, no further treatment
  • cream that has undergone some heavier pasteurization method, like UHT
  • cream that has been stabilized by microfiltration
  • cream that has had chemical stabilizers added (usually carrageenan)

The effect of the treatment interacts with the effect of the aging (the older the cream, the less likely it will whip - this effect exists even before the expiry date) and with how strictly you follow best practices when whipping.

Basil Bourque
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rumtscho
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  • Thanks, it's regular pasteurised (not UHT) double cream from the supermarket and hasn't been opened. This is in the UK - I understand UK double cream has a higher fat content that in other parts of the world. I guess I need to try it and see what happens. – John Rennie Jul 12 '21 at 15:54
  • @JohnRennie please do report back, I'm curious what the results will be. – Kat Jul 12 '21 at 20:05
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    @Kat I hate to be the naysayer here, but the results are probably only interesting for John - no matter if his batch of cream whips or curdles, this is not predictive of whether some other batch of cream in some other person's kitchen will whip or curdle. It sometimes goes this way, sometimes the other. – rumtscho Jul 13 '21 at 13:57
  • @rumtscho well it would prove the other answer wrong if it doesn't whip. – Kat Jul 13 '21 at 14:44
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If cream is still fresh enough to eat then it will whip just fine, there aren't any mechanisms at work which will prevent whipping. If it's been opened in the fridge for a few days it may thicken up a bit, I usually add a splash of whole milk to thin it out a bit or it can get a bit claggy.

GdD
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