The perfect (and easy) travel sushi

Cucina Letteraria, a new column for Italian paper Corriere della Sera

In Kyoto or Tokyo, you might notice this persimmon leaf sushi (kakinohazushi) at the shops selling bento boxes for the shinkansen, the bullet train. It's because it is the perfect traveling food. I first read about this preparation in Jun'ichiro Tanizaki's In Praise of Shadows (Libro d'Ombra in Italian), from 1933, an essay on Japanese aesthetics in a f…