In the legal definition, the essence food - what is in it, what it does - is not considered, only what is done to it or with it. These countries define food as "any item that is to be processed, partially processed, or unprocessed for consumption."
Perhaps in recognition of the removal from food of what makes it food rather than any other material, the word "food stuffs" is used, which include any substance to be ingested by humans. This could be "stuff" insufficient to sustain life or even antithetical to it.'
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