The answer to your question probably lies in the "serving size". The FDA allows products to say zero fat or low fat if the number of grams falls below a certain level. By reducing the "serving size", they are allowed to show their product as zero fat. To understand this better, look at a can of spray cooking oil. Spray cooking oil IS oil, but when you give a quick spritz (very quick), the actual fat contact comes out to be less than 0.5 grams. If calling the company doesn't help, maybe going to their website or facebook page (if they have one) will get you an answer, or do it the old fashioned way and write. Suing is useless. If the product turns out to not be what you want, switch to another product. Also, for future reference, check out: http://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/labelingnutrition/ucm064911.htm.
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