Premise: By the way, if you come acrosea menu offering filete de pescado a la romana con patatas fritas, don't accuse the restaurant of putting on airs it's the correct Spanish way to say  fish and chips.

Hypothesis: Filete de pescado a la romana con patatas fritas is in fact ungrammatical in Spanish and if you see it on the menu it is only there for show.
Relation: contradiction