Did you get it right?
Two modern packaging details slipped into this 1950s school cafeteria.

The Answer
The correct answer is: the plastic sauce packet and barcode tray label.
Here is why
- A single-serve plastic sauce packet is on a tray.
- A barcode-style label is stuck to the edge of a cafeteria tray.
Why people miss it
Both details belong around food, but their modern packaging does not fit the old cafeteria.
What answer did you get before checking?