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Author Topic: Where does the extra volume come from in a cooked egg ?  (Read 5358 times)

Offline neilep

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Dear Eggsperts,

This is a raw egg:



This is a cooked egg:



Notice how the cooked egg white seems to be larger than it's raw counterpart ?

could I get the cooked egg back into it's shell ?...what has increased the volume of the egg ?

a hug, shmish and an egg dish (of your choice) is given to the answerer !!





 

Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #1 on: 25/07/2007 18:22:08 »
does it maybe just look bigger because it's no longer clear?
 

Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #2 on: 25/07/2007 18:24:20 »
ewe might be right Kadie....perhaps it's an illusion but I do think it expands when being cooked !!
 

Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #3 on: 25/07/2007 18:26:09 »
hmmm... i've never really paid attention... but if it did expand, wouldn't a boiled egg explode?
 

Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #4 on: 25/07/2007 19:02:14 »
Well, I know an egg in the microwave (still in it's shell) goes BANG !!......but because there's nothing restricting the egg in a pan I think it just gradually expands........I'm probably wrong though....perhaps my tummy just wants the egg to be bigger !!
 

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Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #5 on: 25/07/2007 19:17:42 »
Shrunk
perhaps. i could be wrong too though! thank you for reminding me, though, that i bought eggs this morning after work so that i could make a cake. it's in the oven right now
 

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Where does the extra volume come from in a cooked egg ?
« Reply #6 on: 25/07/2007 19:30:27 »
Shrunk
Hmmmmmmmm..cake ........



 

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Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #7 on: 25/07/2007 19:33:24 »
Shrunk
i guess i could share. do you like strawberries?
 

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Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #8 on: 25/07/2007 19:39:09 »
Shrunk
i guess i could share. do you like strawberries?

I do like strawberries...but I think they may be raspberries !!.....no worries....I first thought they were strawberries too until I just had a closer look !
 

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Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #9 on: 25/07/2007 19:43:55 »
Shrunk
no... i meant... my cake is a strawberry cake. i just finished cutting them up to put on top. the batter was strawberry flavored.. it smells so good
 

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Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #10 on: 25/07/2007 19:47:25 »
Shrunk
no... i meant... my cake is a strawberry cake. i just finished cutting them up to put on top. the batter was strawberry flavored.. it smells so good

hmmmmmm...yummy !!..sorry I misunderstood .........hmmmmm strawberry cake........hmmmmmmmmmmmm...*sheepys mouth waters*
 

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Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #11 on: 25/07/2007 19:53:11 »
Shrunk
it just came out of the oven. it has to cool
 

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Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #12 on: 25/07/2007 21:03:47 »
Shrunk
it just came out of the oven. it has to cool

hmmmmmm........I know this thread has gone

but can you post a piccy ?
 

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Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #13 on: 25/07/2007 21:06:12 »
Shrunk
no... not until next time i go to my mom's house :(
 

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Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #14 on: 25/07/2007 21:18:08 »
Shrunk
*sheepy says*
 

Offline Karen W.

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Where does the extra volume come from in a cooked egg ?
« Reply #15 on: 25/07/2007 22:35:58 »
When you crack an raw egg note that there is excess space in that egg for the chick to grow. when you boil the egg it still fits in the shell if you did it right and did not crack the eggs by putting cold eggs into hot water to start with! By all rights that egg should fit back into the shell!

BTW I just got a great apple sauce cake recipe moments ago..LOL I think we are all thinking about cake Those are definitely Rasberries YUMMMMMMMM!
 

Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #16 on: 25/07/2007 22:57:54 »
So a raw egg has excess space (gimmee cake !)....but when you boil an egg in it's shell (gimmee more cake ) and then crack it..it has expanded to fill the whole egg shell.

This is what I want to know...what is the expansion.....?..where is the more volume coming from !! ?
 

Offline kdlynn

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Re: Where does the extra volume come from in a cooked egg ?
« Reply #17 on: 25/07/2007 23:00:47 »
you'll have to come and get it... but it's sitting there with one piece eaten (i ate it... so yummy...)
 

Offline Karen W.

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Where does the extra volume come from in a cooked egg ?
« Reply #18 on: 25/07/2007 23:11:33 »
So a raw egg has excess space (gimmee cake !)....but when you boil an egg in it's shell (gimmee more cake ) and then crack it..it has expanded to fill the whole egg shell.

This is what I want to know...what is the expansion.....?..where is the more volume coming from !! ?

Well Kind Sir.. It must change something..steam oil, heat I don't know..Molecules HmmmmmmmmmIt goes ffffrom being semi solid liquid..LOL to solid!!
 

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Where does the extra volume come from in a cooked egg ?
« Reply #19 on: 26/07/2007 03:57:08 »
When you crack an raw egg note that there is excess space in that egg for the chick to grow. when you boil the egg it still fits in the shell if you did it right and did not crack the eggs by putting cold eggs into hot water to start with! By all rights that egg should fit back into the shell!

A raw egg does have a small air gap in the top, and I was always taught to pierce a hole in the shell at the top to allow the hot air to escape from the shell when boiling, otherwise, the egg shell will crack under the pressure.
 

Offline neilep

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Where does the extra volume come from in a cooked egg ?
« Reply #20 on: 26/07/2007 14:31:20 »
When you crack an raw egg note that there is excess space in that egg for the chick to grow. when you boil the egg it still fits in the shell if you did it right and did not crack the eggs by putting cold eggs into hot water to start with! By all rights that egg should fit back into the shell!

A raw egg does have a small air gap in the top, and I was always taught to pierce a hole in the shell at the top to allow the hot air to escape from the shell when boiling, otherwise, the egg shell will crack under the pressure.

yes, I was taught this too....I even remember us having an ' egg pricker '....but nowadays we just put the egg in and by the time the shell cracks the inside is too solid to leak out !


Incidentally (more cooking tips).....when you put the egg in...turn off the gas/electric hob and just let it lay there a couple of minutes longer...this still cooks the egg and saves energy too !
 

Offline Karen W.

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Where does the extra volume come from in a cooked egg ?
« Reply #21 on: 26/07/2007 16:25:50 »
I have never heard that one!
 

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Where does the extra volume come from in a cooked egg ?
« Reply #21 on: 26/07/2007 16:25:50 »

 

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