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I just called Nature's Path and they said on record (George, employee 4294) that they do not grain their grains into flour before puffing. See this wiki article. http://en.wikipedia.org/wiki/Puffed_grain. Do you know where you got your information that commercial puffed rice goes through that process?
4 months, 1 week ago on New Way to Puff Rice Puts Protein Back in Cereal
What about puffed millet from Arrowhead? That really looks like the whole grain to me...
4 months, 2 weeks ago on New Way to Puff Rice Puts Protein Back in Cereal