Caponata di pesce is a variation of the traditional Sicilian caponata, where fish or seafood is added to the classic dish of eggplant and vegetables. The base of caponata di pesce typically includes sautéed eggplant, celery, onions, tomatoes, capers, olives, and sometimes pine nuts or raisins, all seasoned with vinegar and sugar to achieve the characteristic agrodolce taste.