Crossword puzzle clue "food on a diner sign"

Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig

Food, on a diner sign

Object on the diner sign in "Nighthawks"

Sign at a diner

Diner sign

Stereotypical diner sign