The Drug in the Sugar

At a department store restaurant, Mr. A was seated at a shared table with a strange man. The man was reading a novel while drinking coffee. Mr. A ordered coffee and curry, put sugar in the coffee, and sprinkled his favorite spice on the curry.

During the meal, a woman came to the table, ate a hamburger steak, and left. Mr. A felt fine after finishing the curry, but began to feel drowsy a while after drinking the coffee, and when he woke up his bag and the man were gone.

Mr. A's cup was brought to him clean and empty, right before his eyes, and no one touched it afterward. The man had been at the table before Mr. A, and the sugar bowl was within his reach. The waitress had poured coffee for other customers from the same pot. The leftover coffee in the pot was tested and found normal, and the other customers who drank coffee from the same pot had no symptoms. The spice jar had been newly opened and placed by a staff member before the curry was served.