Bean likes grapefruit. He says it reminds him of when he was a small child and his grandpa used to eat grapefruit. If Bean was hanging around, Grandpa would give him bites. It's a good memory for him.
I have to say that it's absolutely delightful to me when my older children get nostalgic about their childhoods. As a mom, you're just trying to survive. When years later they say with fondness, "I remember how we used to __________" it's very heart-warming.