You aren't wrong. Just look at Simply Beetus' "recipes":  One jhar of puff reel maioinaishe. huff one keen of schweetun puff cundiensh'd meilk. huff one box of slurp maccarinie pashtha.  That's where the "one serving" shit comes from. One box = one serving. One 20 kg sack of rice = one serving. One whole box of cereal = one serving. And so on.