What food gets stuck in mr twits beard?

In Roald Dahl's book "The Twits," various food items get stuck in Mr. Twit's beard, including spaghetti, bits of fish, and even a few peas. This serves to illustrate his unkempt and disgusting nature, as well as his general lack of hygiene. The food in his beard becomes a source of annoyance for Mrs. Twit and contributes to the comedic elements of the story.