[clock_tower]

"Behaves like the thing in every meaningful way" needs to include nutrition -- and even then, sometimes where it came from and how it was made are also part of what it is. (https://en.wikipedia.org/wiki/Appellation_d'origine_contr%C3...)

[greglindahl]

The nutrition, for mayonnaise, is "all fat with a tiny smidgen of protein"... not so hard to replicate.

I've never seen an appellation applied to mayonnaise, have you?

[clock_tower]

"All fat with a tiny smidgen of protein" is an interesting way of describing egg yolks and olive oil. (Not saying that Helleman's is anything more than soybean oil and 3% egg solids, though.)

[greglindahl]

That's what the nutrition label for mayonnaise says, yes. It also says what kinds of fat. I didn't make this up, the FDA/Congress did.