Question: Mornay sauce includes what type of hard yellow cheese?
Sentence (from "Gruyère cheese"): Before 2001, when Gruyère gained the "appellation d'origine contrôlée" (AOC, now AOP) status as a Swiss cheese, some controversy existed whether French cheeses of a similar nature could also be labelled "Gruyère" (French Gruyère style cheeses include Comté and Beaufort).
Relevant evidence: No