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Old 27.02.2011, 00:34
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Does cooking kill calories?

I have a calorie counting question which I can't seem to find an answer to.

I love to bake. Yes, it's not really going with the calorie counting weightloss thing - but I personally believe in an occasional treat - life's just to short to live without cake forever!

Now, if I bake a cake from a recipe, the question is: how many calories are in it? Of course I can tot up the calories in the raw ingredients, but surely the baking process in itself must burn off some of those calories? I mean, the whole idea of a calorie is how much energy it takes to burn your food to a crisp - so surely if you already "burnt" it a little, some of those calories are gone?

On the other hand I know that calories on shop-packaged foods are calculated based on reference tables of ingredients - which kind of means that the baking part is probably already taken into account when you add up the raw ingredient calories.

So, food scientists out there (or better googlers than me) - please enlighten me
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Old 27.02.2011, 00:49
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Re: Does cooking kill calories?

Baking? No. If you fry some fatty foods (like bacon) then discard the fat then yes.
Cooking can change the amount of work that your body needs digests foods, though.
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Old 27.02.2011, 00:50
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Re: Does cooking kill calories?

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I have a calorie counting question which I can't seem to find an answer to.

I love to bake. Yes, it's not really going with the calorie counting weightloss thing - but I personally believe in an occasional treat - life's just to short to live without cake forever!

Now, if I bake a cake from a recipe, the question is: how many calories are in it? Of course I can tot up the calories in the raw ingredients, but surely the baking process in itself must burn off some of those calories? I mean, the whole idea of a calorie is how much energy it takes to burn your food to a crisp - so surely if you already "burnt" it a little, some of those calories are gone?

On the other hand I know that calories on shop-packaged foods are calculated based on reference tables of ingredients - which kind of means that the baking part is probably already taken into account when you add up the raw ingredient calories.

So, food scientists out there (or better googlers than me) - please enlighten me
Every reasons are good to skip some calories, eh?

I am curious too, so lets see what our scientifics will come up with!
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Old 27.02.2011, 00:59
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Re: Does cooking kill calories?

I read the title the wrong way, heh, actually, all house work kills calories. Even ironing ...

Otherwise, I am not really sure. Actually, if you stew in oil, it will definitely add some cals to raw veggies. If you fry bacon and then dry it on a paper towel, pretty much any meat, something tells me you wipe off the fat and reduce the cals. But, I think, anything cooked gets more caloric, since you add oil, butter or whatever to it, or pesto, etc. I think calorie reduction only happens if you take something out of the pan. But I really am not so sure. By baking, frying, stewing or cooking, you make things more digestable, but I doubt cals reduce.
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Old 28.02.2011, 10:51
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Re: Does cooking kill calories?

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(or better googlers than me) -
Sure:

"If you want to eat pure calories then consuming less food is preferable to incinerating your pizza."

from

http://www.thenakedscientists.com/HT...question/2005/
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Old 28.02.2011, 10:59
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Re: Does cooking kill calories?

On the basis that the calories in baking come from the starch in the flour and the sugar and butter that you add,then the baking process does not remove anything at all.The only thing that disappears in the oven when you bake yr cake, is the water that you added
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Old 28.02.2011, 11:18
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Re: Does cooking kill calories?

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I mean, the whole idea of a calorie is how much energy it takes to burn your food to a crisp - so surely if you already "burnt" it a little, some of those calories are gone?
The energy that burns your food to a crisp comes from the electricity, gas or coal you use to heat it.
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Old 28.02.2011, 11:22
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Re: Does cooking kill calories?

I'd rather eat less cake than cremated cake.

I've been reliably informed that breaking your biscuits doesn't make the calories fall out either
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Old 28.02.2011, 11:58
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Re: Does cooking kill calories?

What counts is a balanced diet, like, for instance, a cookie in each hand.
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Old 28.02.2011, 12:15
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Re: Does cooking kill calories?

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I have a calorie counting question which I can't seem to find an answer to.

I love to bake. Yes, it's not really going with the calorie counting weightloss thing - but I personally believe in an occasional treat - life's just to short to live without cake forever!

Now, if I bake a cake from a recipe, the question is: how many calories are in it? Of course I can tot up the calories in the raw ingredients, but surely the baking process in itself must burn off some of those calories? I mean, the whole idea of a calorie is how much energy it takes to burn your food to a crisp - so surely if you already "burnt" it a little, some of those calories are gone?

On the other hand I know that calories on shop-packaged foods are calculated based on reference tables of ingredients - which kind of means that the baking part is probably already taken into account when you add up the raw ingredient calories.

So, food scientists out there (or better googlers than me) - please enlighten me
The question isn't as stupid as it initially sounds, but the cooking process is really just a change of state of the food, if anything the food will become more calorific, with the addition of energy, seeing as the food obeys the laws of thermodynamics energy equations must be satisfied by the food becoming more calorific, e.g. the caramelisasion process.

Also for things like meat or pastry, the cooking process changes the properties of the food and allows us to digest the food while expending less energy to break it down internally, giving us a calorific benefit.
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Old 28.02.2011, 12:40
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Re: Does cooking kill calories?

Power (watts) = Energy (Joules) / Time (seconds)

I.e. Power . Time = Energy

given that the initial ingredients have an initial energy level and Power is added for a certain amount of time, the energy levels must increase anabolicly until a point of cannabolic break-down (burning).

Now, if you were baking the cake say, at the speed of light then E energy = Mass . (3E+08ms-2)^2, this could lead to a very hot cake, and extra cooling time maybe needed, plus infinitely long baking trays, also finishing baking before starting baking may also be an occurrence
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Old 28.02.2011, 12:42
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Re: Does cooking kill calories?

I have also heard that the cake is a lie.
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Old 28.02.2011, 14:50
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Re: Does cooking kill calories?

It's very simple. Calories are a measure of food tastiness. If cooking food makes it tastier - e.g. pork chops - then the cooked food has more calories. If cooking food makes it less tasty, then the cooked food had fewer calories - e.g. ice cream.

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Old 28.02.2011, 16:41
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Re: Does cooking kill calories?

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It's very simple. Calories are a measure of food tastiness. If cooking food makes it tastier - e.g. pork chops - then the cooked food has more calories. If cooking food makes it less tasty, then the cooked food had fewer calories - e.g. ice cream.

A few weeks ago, I posted the photo below on another thread. It's a sign in the cafe section of the Alpine Chocolat Haus [sic!!!] in Gaylord, Michigan, USA:



OFF TOPIC WARNING: Gaylord is a city (at less than 4000 inhabitants actually just a village according to European standards) that has a Swiss and Alpine Town Theme. In other words, all owners of buildings in downtown Gaylord have to build / decorate their buildings according to what little Johnny thinks is typically Swiss. Highly recommended! It's an absolute riot. I can post photos if anyone is interested, but of course I do not want to derail this thread.
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Old 28.02.2011, 16:57
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Re: Does cooking kill calories?

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Now, if I bake a cake from a recipe, the question is: how many calories are in it? Of course I can tot up the calories in the raw ingredients, but surely the baking process in itself must burn off some of those calories? I mean, the whole idea of a calorie is how much energy it takes to burn your food to a crisp - so surely if you already "burnt" it a little, some of those calories are gone?
This might interest you. It explains the reactions that take place when baking: http://nzic.org.nz/ChemProcesses/food/6D.pdf

But otherwise what he said:

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...The only thing that disappears in the oven when you bake your cake, is the water that you added
...kinda (see link I posted)... and what s/he said:

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The energy that burns your food to a crisp comes from the electricity, gas or coal you use to heat it.
Also, nevermind the cream you put on the cake after baking, heh?
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Old 02.03.2011, 00:03
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Re: Does cooking kill calories?

Hey everyone, thanks for filling me in on that - I got sucked into a work black hole the past couple of days and didn't get a chance to come back to this.

Still it's good to know that my question was "not as stupid as it first seems"! And that some of you have managed to baffle me with science (that's me with two degrees in maths ).

Actually though I'm reasonably happy to know that if I'm baking a cake I can just calculate the calories (more or less) by adding up the ingredients. As far as I'm concerned calorie counting is basically about knowing what you're eating. So, I do believe firmly in eating cake - even when dieting. I mean, it's one of the main food groups right? I just like to know how big a piece I can eat within my calorie boundaries.

As an aside: on the weekend I baked my first Swiss roll in Switzerland (which I'm sure is really not a national dish!) with a fatless flourless mixture - and it was fabulous. And (relatively speaking) low calorie too. Looking at the ingredients (eggs, cocoa powder, sugar) it just seems impossible that this would make a cake - but it really does

I'll post the recipe if someone's interested in that (my thankyou gift for the replies )
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Old 02.03.2011, 00:28
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Re: Does cooking kill calories?

Here you go with the recipe:

6 eggs
150g caster sugar
50g cocoa powder

Add whatever kind of filling you want; jam, cream, buttercream, I had a vision of spreading it with nutella but after making a low-cal cake I thought I better keep the filling relatively low cal so I went for whipped weightwatchers low cal cream.

Separate the eggs. Whisk the whites to soft peaks. Then in the other bowl whisk the yolks with the sugar until they get slightly thick, then stir in the cocoa powder. Fold the whites (carefully!) into the yolk mixture.

Grease & line a rectangular tin 29 x 18cm (mine was a bit bigger than that - I have one of those cheapo Ikea red based ones). Pour in the mixture and whack it in the oven at 180 for about 25 mins.

Take it out and leave it to cool it totally in the tin (it will shrink - don't panic!) Then turn it completely upside down onto a sheet of baking paper that's been dusted with icing sugar, spread with your chosen filling and roll it up.

Tip: don't even think about refridgerating it - you have to eat it right away! (Seriously if you put it in the fridge it will turn into a sticky mess - I've done this before in the past).

Calories:
112 per 100g of caster sugar
54 per egg
36 per 10g cocoa

So I make that total of 672 calories - plus of course your chosen filling. About 10 slices per cake - so that's only 67 cals (plus filling) per slice.
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Old 05.03.2011, 23:47
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Re: Does cooking kill calories?

No, cooking makes no difference.

F. Zappa, BSc, MSc, PhD, FRSC
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