wash jam out of his ear

[hoangkha]

Hi!
- And it was kind of him to ask me, even after he'd had to wash jam out of his ear
What does the bold phrase mean, please?

[5jj]

- And it was kind of him to ask me, even after he'd had to wash jam out of his ear
What does the bold phrase mean, please?

Context!

If we knew the situation before the washing, we might know how the fruit and sugar preserve got into his ear.