I think this is what I was thinking of: http://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/labelingnutrition/ucm385663.htm#servin

I think this is what I was thinking of: http://www.fda.gov/food/guidanceregulation/guidancedocumentsregulatoryinformation/labelingnutrition/ucm385663.htm#serving_size http://www.fda.gov/food/guidanceregulation/guidancedocuments...