Sauce
means “salted food,” for giving a relish to meat, as pickled roots, herbs, and so on. (Latin, salsus.)
The sauce was better than the fisk. The accessories were better than the main part. This may be said of a book in which the plates and getting up are better than the matter it contains.
“After him another came unto her, and served her with the same sauce; then a third …”—The Man in the Moon, etc. (1609).