 Every product that bears the "Basic Stamp" must contain at least 8 grams of whole grain per serving.8 grams equals one half of a MyPyramid serving.Products that bear the "100% Whole Grain Stamp" contain at least 16 grams of whole grain per serving – or a full MyPyramid serving as outlined by the U.S. Department of Agriculture – and do not contain any refined grains.