I deliberately chose that example for the shits and giggles.

But now that I think of it, I guess I should explain some more. It doesn’t have to be a person to work that way.

Usually it works like this: you have place names like: Wien (Vienna)
Frankfurt
Nürnberg (Nuremberg)
Thüringen (Thuringia)
Krakau (Krakow)

by making them end in -er you can turn them into adjectives. (Keeping the capitalization, because they are names, although adjectives are usually lower-case):

Frankfurter Würstchen
Wiener Würstchen
Nürnberger Würstchen
Thüringer Würstchen
Krakauer Wurst

Those are all some kind of sausages (Wurst, pl. Würste, diminutive: Würstchen), by the way. And because they are well recognized and when the context is clearly about food, you can drop the noun entirely and the former adjective turns into a Noun, which can stand on its own. (But mostly distinguished by their article/genus)

Frankfurter
Wiener
Nürnberger
Thüringer
Krakauer

Though for some reason, “Pariser” is a slang word for condoms.