Weighing your food
HardcoreP0rk
Posts: 936 Member
Has anyone else noticed that serving sizes, which are listed in weight AND volume, are often dramatically "off" ?
This morning, I weighed out my Fage 2% yogurt, and it came in at 528g. When I looked at the container, that's roughly 2.3 servings of 227g each. They list a serving as 8 ounces. I can't imagine this is a volumetric 8 ounces. And there's NO WAY I ate over 16 volumetric ounces of yogurt.
Is it possible, that their serving size isn't a volumetric 8 ounces? I mean, they don't necessarily say if it's by weight or volume (which is why I hate 'ounces' in general).
Do any of you come across similar issues when you weigh your food?
This morning, I weighed out my Fage 2% yogurt, and it came in at 528g. When I looked at the container, that's roughly 2.3 servings of 227g each. They list a serving as 8 ounces. I can't imagine this is a volumetric 8 ounces. And there's NO WAY I ate over 16 volumetric ounces of yogurt.
Is it possible, that their serving size isn't a volumetric 8 ounces? I mean, they don't necessarily say if it's by weight or volume (which is why I hate 'ounces' in general).
Do any of you come across similar issues when you weigh your food?
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Yes. This is why we weigh our food. The volume sizes on serving labels are essentially the company's best guess as to what size a weighted serving will be -- it's usually not accurate at home for a host of possible reasons (different measuring cups, packing more or less in than they did in their lab, altitude variations). It's exactly why people here are so vocal about weighing food rather than estimating or cup-measuring; the calories in a serving are (more or less) accurate by weight, not by volume.0
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Yes. This is why we weigh our food. The volume sizes on serving labels are essentially the company's best guess as to what size a weighted serving will be -- it's usually not accurate at home for a host of possible reasons (different measuring cups, packing more or less in than they did in their lab, altitude variations). It's exactly why people here are so vocal about weighing food rather than estimating or cup-measuring; the calories in a serving are (more or less) accurate by weight, not by volume.
Exactly.0 -
Volume ounces are not the same as weight ounces. So liquids and other wet ingredients are usually measured in volume ounces due to their fluidity. Dry ingredients will be measured in weight ounces. The manufacturer will provide the correct information to use and in tracking caloric intake, I always weigh as for example, a tablespoon of peanut butter and a true tablespoon of peanut butter (by weight) are significantly different in calories.0
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You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
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Volume ounces are not the same as weight ounces. So liquids and other wet ingredients are usually measured in volume ounces due to their fluidity. Dry ingredients will be measured in weight ounces. The manufacturer will provide the correct information to use and in tracking caloric intake, I always weigh as for example, a tablespoon of peanut butter and a true tablespoon of peanut butter (by weight) are significantly different in calories.
So yogurt is a colloid... would it be measured in fluid ounces?
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HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.0 -
HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.
8oz BY WEIGHT is 227g
8oz BY VOLUME could be any number of g in weight
They list a volumetric serving size of 1 cup / 8 oz but they list a mass of 227g which is SIGNIFICANTLY LESS than 8 volumetric oz of yogurt. So which is the REAL serving size?0 -
Hm, that's weird. Any greek yogurt I've eaten lists a serving as 1 cup (8fl oz), and all of them have been 220-230g. You're right I completely misread your post. But, even if you just google 8 ounces in grams, you get 226, so that is based off of weight ounces. But, when I measure out my 226g of yogurt, it's very close to a one fluid cup measurement (I put it into a 1 cup tupperware for transport to work).HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
I can't even fathom how they got over 500 grams in a serving unless it's just a complete typo. Or they're using dark matter as an ingredient...
I personally haven't noticed anything this blatantly wrong.
ETA: Rereading the first post; I'm more confused than ever.
I find 8 ounces (by weight) of greek yogurt to be very close to 8 ounces (fluid). Perhaps you are underestimating what 2.5 cups of yogurt looks like?0 -
Hm, that's weird. Any greek yogurt I've eaten lists a serving as 1 cup (8fl oz), and all of them have been 220-230g. You're right I completely misread your post. But, even if you just google 8 ounces in grams, you get 226, so that is based off of weight ounces. But, when I measure out my 226g of yogurt, it's very close to a one fluid cup measurement (I put it into a 1 cup tupperware for transport to work).HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
I can't even fathom how they got over 500 grams in a serving unless it's just a complete typo. Or they're using dark matter as an ingredient...
I personally haven't noticed anything this blatantly wrong.
I'll test again at home. Maybe I made a mistake or didnt tare my balance appropriately. I'm glad someone who has weighed yogurt was able to chime in, because I was going crazy. I will carefully weigh out 8 volumetric ounces and get back to you guys. But my issue is that I was using a small glass that doesnt even hold 16 oz and it came in at 528g of yogurt which is (by their numbers) over 18 ounces. It's so far off, I had to have made a mistake.
ETA: I logged it as 1.5 servings because it's DEFINITELY not 2.3 servings but I don't want to underestimate.0 -
HardcoreP0rk wrote: »HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.
8oz BY WEIGHT is 227g
8oz BY VOLUME could be any number of g in weight
They list a volumetric serving size of 1 cup / 8 oz but they list a mass of 227g which is SIGNIFICANTLY LESS than 8 volumetric oz of yogurt. So which is the REAL serving size?
Ok, I think I get you. Because they actually included the wording "1 cup" which infers volume rather than just stating 8oz and weight. Am I following you now?
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HardcoreP0rk wrote: »HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.
8oz BY WEIGHT is 227g
8oz BY VOLUME could be any number of g in weight
They list a volumetric serving size of 1 cup / 8 oz but they list a mass of 227g which is SIGNIFICANTLY LESS than 8 volumetric oz of yogurt. So which is the REAL serving size?
Ok, I think I get you. Because they actually included the wording "1 cup" which infers volume rather than just stating 8oz and weight. Am I following you now?
Exactly.
ETA: It's listed like this:
1 cup / 8 oz (227g)0 -
I have noticed that they can be off by around 10% especially calorie dense foods and breads. I don't sweat the small stuff though, I weigh and log everything, and if I'm +/-100 cals from my goal it's as good as a bullseye.
Rigger0 -
HardcoreP0rk wrote: »HardcoreP0rk wrote: »HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.
8oz BY WEIGHT is 227g
8oz BY VOLUME could be any number of g in weight
They list a volumetric serving size of 1 cup / 8 oz but they list a mass of 227g which is SIGNIFICANTLY LESS than 8 volumetric oz of yogurt. So which is the REAL serving size?
Ok, I think I get you. Because they actually included the wording "1 cup" which infers volume rather than just stating 8oz and weight. Am I following you now?
Exactly.
Probably their indifference to it's exactitude thinking that people will recognize 1 cup as 8oz and since they also offer the weight, they assume it's inferred that its by weight and truly not by volume.0 -
HardcoreP0rk wrote: »
Hm, that's weird. Any greek yogurt I've eaten lists a serving as 1 cup (8fl oz), and all of them have been 220-230g. You're right I completely misread your post. But, even if you just google 8 ounces in grams, you get 226, so that is based off of weight ounces. But, when I measure out my 226g of yogurt, it's very close to a one fluid cup measurement (I put it into a 1 cup tupperware for transport to work).HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
I can't even fathom how they got over 500 grams in a serving unless it's just a complete typo. Or they're using dark matter as an ingredient...
I personally haven't noticed anything this blatantly wrong.
I'll test again at home. Maybe I made a mistake or didnt tare my balance appropriately. I'm glad someone who has weighed yogurt was able to chime in, because I was going crazy. I will carefully weigh out 8 volumetric ounces and get back to you guys. But my issue is that I was using a small glass that doesnt even hold 16 oz and it came in at 528g of yogurt which is (by their numbers) over 18 ounces. It's so far off, I had to have made a mistake.
ETA: I logged it as 1.5 servings because it's DEFINITELY not 2.3 servings but I don't want to underestimate.
Yeah, be sure you tared the glass. I use a plastic container, so it only weighs 10g. I know just in case I take too long to weigh out my yogurt and it turns off (usually when it's the last serving out of the container and I'm trying to scrape the sides). If that happens, I just turn it back on and then measure to 236g (226g of yogurt + 10g of container).
I find it's useful to know the weights of some of your commonly used containers. Sadly, my bowls in my dish set all have different weights, so I never weigh in those.0 -
If you ate 528g, you ate 2.3 servings.0
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^???
I'll assume the container says 4 servings. Weigh out four 227g servings and I'll bet the container is empty.0 -
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Checked today. Looks like I didn't tare the glass. Must have hit the button super quickly while I was flying about in the morning.
ETA - the glass weighs 318g btw. So I got pretty close to 1 serving just by eye balling it.0 -
_benjammin wrote: »^???
I'll assume the container says 4 servings. Weigh out four 227g servings and I'll bet the container is empty.
Maybe try reading the whole thread. Just an idea.0 -
HardcoreP0rk wrote: »HardcoreP0rk wrote: »HardcoreP0rk wrote: »You guys arent getting it. Obviously volume ounces and weight ounces are different, because...density. It would appear that Fage did a short cut though, and just converted 8 ounces to grams weight for weight RATHER than actually list the weight in g of an 8 volumetric ounce serving.
I DO believe that they are saying a serving = 8 volumetric ounces. I DONT believe that they are listing the correct weight in grams of a single serving. Do you ever see discrepancies such as this on other foods?
So lets do the math. 28.3495 grams = 1oz
28.3495g x 8oz = 226.796 grams and they are saying that a 8oz serving is 227g
Guess I'm still not following what your issue is.
8oz BY WEIGHT is 227g
8oz BY VOLUME could be any number of g in weight
They list a volumetric serving size of 1 cup / 8 oz but they list a mass of 227g which is SIGNIFICANTLY LESS than 8 volumetric oz of yogurt. So which is the REAL serving size?
Ok, I think I get you. Because they actually included the wording "1 cup" which infers volume rather than just stating 8oz and weight. Am I following you now?
Exactly.
ETA: It's listed like this:
1 cup / 8 oz (227g)
the 1 cup is a non weight ( volume ) measurement for people who don't have a scale
8oz is a weight in imperial terms that equals 227 grams in metric terms
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When you weigh your meat...do you weigh before or after you cook it?0
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sidney7305 wrote: »When you weigh your meat...do you weigh before or after you cook it?
You can do either, as long as you log it accordingly. There are entries for either raw or cooked meats. I usually do the raw entry and weigh the raw meat so that I avoid any unknowns. For me, a cooked entry could be cooked in oil, in broth, or in nothing at all. I just don't know, so I prefer to log it raw and add my entries for other ingredients separately.
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This discussion has been closed.
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