[ben_w]

I know this isn't quite what you meant, but I know a dog by the name Chorizo, and every time I see a soy chorizo in a supermarket, I can't help but imagine him in a sombrero introducing himself in Spanish.

I agree with the actual point you're making — though I can imagine a DnD-style alignment chart with one axis for substance purity and the other for functional equivalence, such a chart has both soy milk and peanut butter in the "functional purity, ingredient rebel" corner.