Yikes! Apple cidar vinegar has 0 carbs according to the label on the bottle, but FitDay says it has 14g per cup. What's up with that? Which is correct?

I read somewhere that the USDA nutrition site says there are .05 grams in one teaspoon, and therefore 2.2 grams in one cup.

I have always been under the impression that the labels are more correct, just because they're more likely to be accurate to the brand you have and more up-to-date than the website. I thought it was a hassle at first, but it's actully really helpful to use the 'custom food' option to enter in things you eat so you can get the most accurate information.

My understanding is that the FDA allows a product to be labeled within a range of accuracy, like a swing of 10-20%, to allow for variances in the production of the product. Oh and there are also different types of apple cider vinegar, and how long it's aged. I believe the word vinegar actually means "rotten or spoiled wine", so age is a factor.

I count it as zero since I use about two tablespoons per serving. If it has anything it is going to be less than 5 cals per serving, because that is what the gov't will allow the manufacturer to allow.

I've noticed the same thing with veggies and other items on FITDAY. It seems that this site has higher caloric values than any others I've tried. (nutritiondata, livestrong, fatsecret, caloriecount)