She takes the foil, draws it across the stone once, and squints at the streak.

She checks it against a faded chart on the wall labeled STREAK REFERENCE.

Then a small printer under the counter produces a slip.

ASSAY RESULT

Sample: "What is on fire?"

Checking for smoke 58% · Curiosity 30% · Alarm 12%

Trace elements: carving, not by the original sign-maker.

Assayer's note: not the café.