In the interrogation room scene of a detective story made around that time, a low-paid detective orders katsudon out, pays for it, and lets the suspect eat it, saying "You'll never be able to eat it once you're in jail;" moved by his kindness, the suspect begins to confess to his crime.
その頃の刑事ドラマの取調室のシーンでは、刑務所に行ったら二度と食べられないだろうと刑事が自分の安月給から店屋物のカツ丼をとってやり被疑者に食べさせると、被疑者はその情にほだされ犯行を自供をするというシーンがあった。