Thats in the searches files. Someone updated those files but didn't include a level 90 food in that field. I will ask a provisioneer today some favorite foods and add one in unless someone beats me to it
Ok heres a search for the Market Window with 3 tier 9 foods added. By examining the file you can see how to add other foods but at least this one doesn't give Parent.Search as a text when selecting foods to search for.