Italian cooking keeps an unwritten but firmly held rule: no cheese on seafood. The logic is sound; the sharpness of aged cheese crushes the sea’s fine flavors. How then did the Philadelphia family break the rule and build one of the world’s best-loved rolls?

The answer is the age of the cheese. Cream cheese is young and unripened; it has no sharpness and makes no claims. It does not compete with the seafood; it lays a floor for it. The sweet, gently resistant flesh of shrimp speaks all the more clearly on that cool ground; in every bite comes first the calm of the cheese, then the cheer of the shrimp.

The shrimp arrives at this meeting with a story of its own: in Japanese it is ebi 海老, by its kanji the old man of the sea, a symbol of long life at the Japanese table. On the Mediterranean, no symbol is needed; here the shrimp is a child of the house.

Some couples that look mismatched on paper live long and happily at the table. This roll is their story.