I know butlers are depicted as super-servants in many of these stories, but c'mon...If the ingredient is so mysterious to the people at large, at least give him a nudge in a direction to look. A description would be good.
I'll allow it here.
It's not depicted as superior because it's better on any kind of factual basis. The most important feature of the food here is familiarity... And it's not like MC is the one introducing recipes to the world or anything.