Can You Whistle, Johanna?

This is a sensitive book, a classic in many countries, about a friendship between two boys and an old man.

There are plenty of old men who would do as a grandfather at the retirement home, Ulf suggests, when Berra wonders why he doesn't have one. They go there together to find one - ideally one who eats pig's trotters, invites you to tea and who can teach you to whistle.