The word for today is…
restaurateur (noun):
: the operator or proprietor of a restaurant
Source : Merriam -Webster
Etymology : Restaurateur and restaurant were borrowed directly from related French words, and both ultimately derive from the Latin word restaurare (“to restore”). Restaurateur is the older of the two; our earliest evidence dates it to 1793. Restaurant is only slightly newer; it dates to 1806. Of the two words, restaurant is of course significantly more common—a fact that may have influenced the development of the variant spelling restauranteur for restaurateur. Restauranteur first appeared a mere 44 years after restaurateur, but it is considered by many to be an error. It is, however, a standard variant, albeit one that continues to be used less frequently than restaurateur.
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