Why does a hot drink make biscuits soggier?

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« on: 02/01/2009 12:23:02 »
I dunk biscuits. I do. And I bet a lot of you do too. In coffee it has to be choccy digestives, ginger nuts or bourbons; custard creams or jammie dodgers in tea. I've noticed that when my drink is hotter, the biscuits get soggier & bendy quicker than if the drink is cooler. Why is that?
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Offline LeeE

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Why does a hot drink make biscuits soggier?
« Reply #1 on: 02/01/2009 14:21:32 »
Just a guess, but I'm pretty sure that biscuits have fat in them and the heat from the drink could be mobilising it, increasing the permeability of the biscuits and making them absorb the fluid more rapidly.  The heat may also be affecting the surface tension of the drink too.

Just going back to the fats idea; if you use real milk in your tea/coffee, there'll be fat in the drink too.  I think you need to compare hot & cold tea/coffee, with and without milk, against hot and cold water.
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« Reply #2 on: 02/01/2009 14:24:47 »
I don't take milk.

The fat in the biscuits sounds feasible.
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Offline Karen W.

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Why does a hot drink make biscuits soggier?
« Reply #3 on: 02/01/2009 14:34:20 »
I dunk biscuits. I do. And I bet a lot of you do too. In coffee it has to be choccy digestives, ginger nuts or bourbons; custard creams or jammie dodgers in tea. I've noticed that when my drink is hotter, the biscuits get soggier & bendy quicker than if the drink is cooler. Why is that?

"I am the big dipper"..yummmmmy I love anne's sweedish orange ginger waffers in coffee!
I do not however know why it is so..but it does seem hotter beverages cause my waffers to go al soggy faster then say cold milk!



"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline RD

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Why does a hot drink make biscuits soggier?
« Reply #4 on: 02/01/2009 16:42:59 »
The more adventurous biscuit dippers may wish to try a Tim Tam Salm:
where a "Tim tam" biscuit is used as a straw to suck up the hot drink when its filling has partially melted.
« Last Edit: 02/01/2009 16:48:12 by RD »

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« Reply #5 on: 02/01/2009 17:17:34 »
The more adventurous biscuit dippers may wish to try a Tim Tam Salm:
where a "Tim tam" biscuit is used as a straw to suck up the hot drink when its filling has partially melted.

Silly Australians
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Offline DrN

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Why does a hot drink make biscuits soggier?
« Reply #6 on: 02/01/2009 20:30:05 »
I would like to know why, as soon as you discover a particularly scrummy type of biscuit, they are discontinued? My most recent disapointment is Waitrose orange, cranberry and chocolate chip cookies. mmmmMMMMmmmmmm.

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« Reply #7 on: 02/01/2009 21:26:33 »
Waitrose do indeed sell some excellent fare.  [:)]
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Offline Make it Lady

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Why does a hot drink make biscuits soggier?
« Reply #8 on: 02/01/2009 22:22:40 »
Make sure you are buying fairtrade!
Give a man a fire and he is warm for a day, set a man on fire and he is warm for the rest of his life.

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Offline Make it Lady

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Why does a hot drink make biscuits soggier?
« Reply #9 on: 02/01/2009 22:27:57 »
I thought any type of dissolving process is increased by heating the liquid. Giving the liquid particles more energy causes them to collide with the biscuit more vigorously and more frequently. this breaks down the bonds in the biscuit much quicker.
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Offline neilep

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Why does a hot drink make biscuits soggier?
« Reply #10 on: 02/01/2009 22:29:11 »
There are small but perfectly formed entities called Soggy Fairies.

It is their desire, their role...indeed, it is their very calling to induce, nurture and promote the fine art of soggy biscuits when and wherever possible.

Being the progeny betwixt the coupling of a dragon and and an asbestos mat they can withstand very hot temperatures. In fact, the hotter the better.The higher the temperature, the faster they act.

It is a strange thing indeed but it is true. Wherever a hot drink resides, ewe can be sure that Soggy Fairies are awaiting nearby.
It's not the hot liquid that soggifies the biscuit, it's the Soggy Fairies River Dancing upon the biscuit edge. It's akin to crushing grapes in a barrel with your feet.

If ewe put your soggy biscuit next to your ear, ewe may be lucky to hear them burp and giggle.

This is true and now ewe know.
Men are the same as women, just inside out !

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« Reply #11 on: 02/01/2009 22:30:55 »
Neil's being very sensible again
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Offline JnA

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Why does a hot drink make biscuits soggier?
« Reply #12 on: 02/01/2009 23:43:45 »
I'm hedging my bets on the sugar dissolving.

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Offline DrN

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Why does a hot drink make biscuits soggier?
« Reply #13 on: 02/01/2009 23:54:18 »
Its the energy from the heat!

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Offline LeeE

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Why does a hot drink make biscuits soggier?
« Reply #14 on: 03/01/2009 17:22:40 »
Ah - the sugar dissolving - hadn't thought of that - yes, it would dissolve quicker in hot drinks.

Neilp's probably got it right though, with his soggy river-dancing fairies.
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!

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Offline DoctorBeaver

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Why does a hot drink make biscuits soggier?
« Reply #15 on: 03/01/2009 19:58:26 »

Neilp's probably got it right though, with his soggy river-dancing fairies.

Yes, David Flatley has got a bit of a limp wrist.
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paul.fr

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Why does a hot drink make biscuits soggier?
« Reply #16 on: 06/01/2009 15:11:42 »
Wasn't there a paper written on which biscuits are best for dunking?

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Offline LeeE

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Why does a hot drink make biscuits soggier?
« Reply #17 on: 06/01/2009 15:12:51 »
Wasn't there a paper written on which biscuits are best for dunking?

Yes - that rings a bell with me too.
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!