Who's right: food label or websites?

As an example the info for a white potato, oven baked with skin per 100g according to the food label(from Asda) is as follows:
144 kcal
3.9g protein
31.7g carbs (of which sugars 1.2g)
0.2g fat

And nutritiondata.com has the following (again, for 100g, baked, with skin):
94 kcal
2g protein
21g carbs (sugars 1g)
0g fat

So, who do you trust...food label or websites such as nutritiondata.

I hurt myself today, to see if I still feel. I focus on the pain, the only thing that's real. Trent Reznor- Nine Inch Nails.

try

www.aFallaciousExcercise.com

-

R3261


try

www.aFallaciousExcercise.com

Many thanks. Much appreciated.

I hurt myself today, to see if I still feel. I focus on the pain, the only thing that's real. Trent Reznor- Nine Inch Nails.

What he means is - it's all just a guideline number, calculated from ingredients.

There is then natural variation in all product ingredients that will see any particular nutrient go up or down 10% or more.

Net result it's usually fairly useless as anything more than a rough guide. Only things you can bet on being right are carb levels in sugars; fat levels in oils; and that's mostly it...

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Ok, thanks guys. So as long as it's treated as just a 'guideline' I guess it doesn't matter who's info you go by/

Furthermore to my question...and this IS gonna be seen as a very stupid question but please humour me, lol, as it's annoyed the hell out of me for some time:

Using the above example from the food label, where it says that the data is for 100g oven-baked...

is this assuming that one is weighing the food raw and then oven-baking it, the weight after cooking being irrelevant

OR

is this assuming that a potato has been oven baked, and the values are given for 100g of the cooked potato?

I'm by no mean into being overly anal about these things, just happened to weigh my potato after cooking and notice a big reduction in weight(obviously water), and wasn't sure how to interepret the '100g baked'

I hurt myself today, to see if I still feel. I focus on the pain, the only thing that's real. Trent Reznor- Nine Inch Nails.

I would say that if the datasheet says "100g baked", that's 100g of cooked potato, not 100g of originally raw potato.

A baked potato has lost a lot of water weight, so the relative P. C & F content is a lot higher than in a raw potato.

However, the total P, C & F content is the same, as none of that is lost during cooking.

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I would say that if the datasheet says "100g baked", that's 100g of cooked potato, not 100g of originally raw potato.

Thanks for clearing that up Nige. So that woud mean, using the data from nutritiondata:

per 100g baked;
94 kcal
21g carbs

that if one wanted 21g carbs for example, then they may be using a potato with a raw weight of 150-200g (again, example)?

Please tell me i've understood this LOL.

I hurt myself today, to see if I still feel. I focus on the pain, the only thing that's real. Trent Reznor- Nine Inch Nails.

If you're baking your own potato, weigh the raw potato and use the data for raw potato.

If you're buying a ready-baked potato, weigh the baked potato and use the data for baked potato.

I'd rather not try to second-guess the raw weight from the cooked weight in your example.

1) DON'T PANIC! 2) Assumption is the mother of all cock-ups. 3) Where's the omega-3 fat?
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I'd rather not try to second-guess the raw weight from the cooked weight in your example.

Thanks for the reply. And thanks again for clearing it up. Although, with regards to the above, I was thinking more along the lines of cooking a large potato (just because the ones I have at the mo are huge) and eating a 100g portion of it (following on with the example).

I hurt myself today, to see if I still feel. I focus on the pain, the only thing that's real. Trent Reznor- Nine Inch Nails.