The full name of this spot—Yia Yia’s Roadster Grill—should give some clue as to why there are Greek family favorites such as moussaka and pastitsio tucked in among the otherwise American diner-style menu of burgers, melts and malts. (Hint: yia yia means “grandma” in Greek.) Owner Nick Semoudiaris runs the place with his mother, Greek immigrant Koula Gray, and together they’ve turned it into Bellaire’s most beloved restaurant inside a converted Taco Bell.