Caponata (Sicilian: capunata) is a Sicilian aubergine (eggplant) dish consisting of a cooked vegetable salad made from chopped fried eggplant and celery seasoned with sweetened vinegar, with capers in a sweet and sour sauce
You could make this a day in advance which allegedly gives all of the flavours a chance to blend. I'm afraid I'm not that organised!